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- /*
- * Copyright (c) 1994 David I. Bell
- * Permission is granted to use, distribute, or modify this source,
- * provided that this copyright notice remains intact.
- *
- * Modified for the Amiga by Steve Leblanc, Sept 1995
- *
- * Opcode execution module
- */
-
- #include "stdarg.h"
- #include "calc.h"
- #include "opcodes.h"
- #include "func.h"
- #include "symbol.h"
-
- #define QUICKLOCALS 20 /* local vars to handle quickly */
-
-
- VALUE *stack; /* current location of top of stack */
- static VALUE stackarray[MAXSTACK]; /* storage for stack */
- static VALUE oldvalue; /* previous calculation value */
- static char *funcname; /* function being executed */
- static long funcline; /* function line being executed */
-
- FLAG traceflags; /* current trace flags */
- int tab_ok = TRUE; /* FALSE => don't print lading tabs */
-
-
- /*
- * Routine definitions
- */
- static void o_nop(), o_localaddr(), o_globaladdr(), o_paramaddr();
- static void o_globalvalue(), o_paramvalue(), o_number(), o_indexaddr();
- static void o_assign(), o_add(), o_sub(), o_mul(), o_div();
- static void o_mod(), o_save(), o_negate(), o_invert(), o_int(), o_frac();
- static void o_numerator(), o_denominator(), o_duplicate(), o_pop();
- static void o_jumpeq(), o_jumpne(), o_jump(), o_usercall(), o_getvalue();
- static void o_eq(), o_ne(), o_le(), o_ge(), o_lt(), o_gt(), o_preinc();
- static void o_postinc(), o_postdec(), o_debug(), o_print(), o_assignpop();
- static void o_zero(), o_one(), o_printeol(), o_printspace(), o_printstring();
- static void o_oldvalue(), o_quo(), o_power(), o_quit(), o_call(), o_swap();
- static void o_dupvalue(), o_getepsilon(), o_and(), o_or(), o_not();
- static void o_abs(), o_sgn(), o_isint(), o_condorjump(), o_condandjump();
- static void o_square(), o_string(), o_isnum(), o_undef(), o_isnull();
- static void o_matcreate(), o_ismat(), o_isstr(), o_getconfig(), o_predec();
- static void o_leftshift(), o_rightshift(), o_casejump();
- static void o_isodd(), o_iseven(), o_fiaddr(), o_fivalue(), o_argvalue();
- static void o_isreal(), o_imaginary(), o_re(), o_im(), o_conjugate();
- static void o_objcreate(), o_isobj(), o_norm(), o_elemaddr(), o_elemvalue();
- static void o_istype(), o_scale(), o_localvalue(), o_return(), o_islist();
- static void o_issimple(), o_cmp(), o_quomod(), o_setconfig(), o_setepsilon();
- static void o_printresult(), o_isfile(), o_isassoc(), o_eleminit();
-
-
- /*
- * Types of opcodes (depends on arguments saved after the opcode).
- */
- #define OPNUL 1 /* opcode has no arguments */
- #define OPONE 2 /* opcode has one integer argument */
- #define OPTWO 3 /* opcode has two integer arguments */
- #define OPJMP 4 /* opcode is a jump (with one pointer argument) */
- #define OPRET 5 /* opcode is a return (with no argument) */
- #define OPGLB 6 /* opcode has global symbol pointer argument */
- #define OPPAR 7 /* opcode has parameter index argument */
- #define OPLOC 8 /* opcode needs local variable pointer (with one arg) */
- #define OPSTR 9 /* opcode has a string constant arg */
- #define OPARG 10 /* opcode is given number of arguments */
- #define OPSTI 11 /* opcode is static initialization */
-
-
- /*
- * Information about each opcode.
- */
- static struct opcode {
- void (*o_func)(); /* routine to call for opcode */
- int o_type; /* type of opcode */
- char *o_name; /* name of opcode */
- } opcodes[MAX_OPCODE+1] = {
- o_nop, OPNUL, "NOP", /* no operation */
- o_localaddr, OPLOC, "LOCALADDR", /* address of local variable */
- o_globaladdr, OPGLB, "GLOBALADDR", /* address of global variable */
- o_paramaddr, OPPAR, "PARAMADDR", /* address of paramater variable */
- o_localvalue, OPLOC, "LOCALVALUE", /* value of local variable */
- o_globalvalue, OPGLB, "GLOBALVALUE", /* value of global variable */
- o_paramvalue, OPPAR, "PARAMVALUE", /* value of paramater variable */
- o_number, OPONE, "NUMBER", /* constant real numeric value */
- o_indexaddr, OPTWO, "INDEXADDR", /* array index address */
- o_printresult, OPNUL, "PRINTRESULT", /* print result of top-level expression */
- o_assign, OPNUL, "ASSIGN", /* assign value to variable */
- o_add, OPNUL, "ADD", /* add top two values */
- o_sub, OPNUL, "SUB", /* subtract top two values */
- o_mul, OPNUL, "MUL", /* multiply top two values */
- o_div, OPNUL, "DIV", /* divide top two values */
- o_mod, OPNUL, "MOD", /* take mod of top two values */
- o_save, OPNUL, "SAVE", /* save value for later use */
- o_negate, OPNUL, "NEGATE", /* negate top value */
- o_invert, OPNUL, "INVERT", /* invert top value */
- o_int, OPNUL, "INT", /* take integer part */
- o_frac, OPNUL, "FRAC", /* take fraction part */
- o_numerator, OPNUL, "NUMERATOR", /* take numerator */
- o_denominator, OPNUL, "DENOMINATOR", /* take denominator */
- o_duplicate, OPNUL, "DUPLICATE", /* duplicate top value */
- o_pop, OPNUL, "POP", /* pop top value */
- o_return, OPRET, "RETURN", /* return value of function */
- o_jumpeq, OPJMP, "JUMPEQ", /* jump if value zero */
- o_jumpne, OPJMP, "JUMPNE", /* jump if value nonzero */
- o_jump, OPJMP, "JUMP", /* jump unconditionally */
- o_usercall, OPTWO, "USERCALL", /* call a user function */
- o_getvalue, OPNUL, "GETVALUE", /* convert address to value */
- o_eq, OPNUL, "EQ", /* test elements for equality */
- o_ne, OPNUL, "NE", /* test elements for inequality */
- o_le, OPNUL, "LE", /* test elements for <= */
- o_ge, OPNUL, "GE", /* test elements for >= */
- o_lt, OPNUL, "LT", /* test elements for < */
- o_gt, OPNUL, "GT", /* test elements for > */
- o_preinc, OPNUL, "PREINC", /* add one to variable (++x) */
- o_predec, OPNUL, "PREDEC", /* subtract one from variable (--x) */
- o_postinc, OPNUL, "POSTINC", /* add one to variable (x++) */
- o_postdec, OPNUL, "POSTDEC", /* subtract one from variable (x--) */
- o_debug, OPONE, "DEBUG", /* debugging point */
- o_print, OPONE, "PRINT", /* print value */
- o_assignpop, OPNUL, "ASSIGNPOP", /* assign to variable and pop it */
- o_zero, OPNUL, "ZERO", /* put zero on the stack */
- o_one, OPNUL, "ONE", /* put one on the stack */
- o_printeol, OPNUL, "PRINTEOL", /* print end of line */
- o_printspace, OPNUL, "PRINTSPACE", /* print a space */
- o_printstring, OPSTR, "PRINTSTR", /* print constant string */
- o_dupvalue, OPNUL, "DUPVALUE", /* duplicate value of top value */
- o_oldvalue, OPNUL, "OLDVALUE", /* old value from previous calc */
- o_quo, OPNUL, "QUO", /* integer quotient of top values */
- o_power, OPNUL, "POWER", /* value raised to a power */
- o_quit, OPSTR, "QUIT", /* quit program */
- o_call, OPTWO, "CALL", /* call built-in routine */
- o_getepsilon, OPNUL, "GETEPSILON", /* get allowed error for calculations */
- o_and, OPNUL, "AND", /* arithmetic and or top two values */
- o_or, OPNUL, "OR", /* arithmetic or of top two values */
- o_not, OPNUL, "NOT", /* logical not or top value */
- o_abs, OPNUL, "ABS", /* absolute value of top value */
- o_sgn, OPNUL, "SGN", /* sign of number */
- o_isint, OPNUL, "ISINT", /* whether number is an integer */
- o_condorjump, OPJMP, "CONDORJUMP", /* conditional or jump */
- o_condandjump, OPJMP, "CONDANDJUMP", /* conditional and jump */
- o_square, OPNUL, "SQUARE", /* square top value */
- o_string, OPSTR, "STRING", /* string constant value */
- o_isnum, OPNUL, "ISNUM", /* whether value is a number */
- o_undef, OPNUL, "UNDEF", /* load undefined value on stack */
- o_isnull, OPNUL, "ISNULL", /* whether value is the null value */
- o_argvalue, OPARG, "ARGVALUE", /* load value of arg (parameter) n */
- o_matcreate, OPONE, "MATCREATE", /* create matrix */
- o_ismat, OPNUL, "ISMAT", /* whether value is a matrix */
- o_isstr, OPNUL, "ISSTR", /* whether value is a string */
- o_getconfig, OPNUL, "GETCONFIG", /* get value of configuration parameter */
- o_leftshift, OPNUL, "LEFTSHIFT", /* left shift of integer */
- o_rightshift, OPNUL, "RIGHTSHIFT", /* right shift of integer */
- o_casejump, OPJMP, "CASEJUMP", /* test case and jump if not matched */
- o_isodd, OPNUL, "ISODD", /* whether value is odd integer */
- o_iseven, OPNUL, "ISEVEN", /* whether value is even integer */
- o_fiaddr, OPNUL, "FIADDR", /* 'fast index' matrix address */
- o_fivalue, OPNUL, "FIVALUE", /* 'fast index' matrix value */
- o_isreal, OPNUL, "ISREAL", /* whether value is real number */
- o_imaginary, OPONE, "IMAGINARY", /* constant imaginary numeric value */
- o_re, OPNUL, "RE", /* real part of complex number */
- o_im, OPNUL, "IM", /* imaginary part of complex number */
- o_conjugate, OPNUL, "CONJUGATE", /* complex conjugate */
- o_objcreate, OPONE, "OBJCREATE", /* create object */
- o_isobj, OPNUL, "ISOBJ", /* whether value is an object */
- o_norm, OPNUL, "NORM", /* norm of value (square of abs) */
- o_elemaddr, OPONE, "ELEMADDR", /* address of element of object */
- o_elemvalue, OPONE, "ELEMVALUE", /* value of element of object */
- o_istype, OPNUL, "ISTYPE", /* whether types are the same */
- o_scale, OPNUL, "SCALE", /* scale value by a power of two */
- o_islist, OPNUL, "ISLIST", /* whether value is a list */
- o_swap, OPNUL, "SWAP", /* swap values of two variables */
- o_issimple, OPNUL, "ISSIMPLE", /* whether value is simple type */
- o_cmp, OPNUL, "CMP", /* compare values returning -1, 0, 1 */
- o_quomod, OPNUL, "QUOMOD", /* calculate quotient and remainder */
- o_setconfig, OPNUL, "SETCONFIG", /* set configuration parameter */
- o_setepsilon, OPNUL, "SETEPSILON", /* set allowed error for calculations */
- o_isfile, OPNUL, "ISFILE", /* whether value is a file */
- o_isassoc, OPNUL, "ISASSOC", /* whether value is an association */
- o_nop, OPSTI, "INITSTATIC", /* once only code for static init */
- o_eleminit, OPONE, "ELEMINIT" /* assign element of matrix or object */
- };
-
-
-
- /*
- * Initialize the stack.
- */
- void
- initstack()
- {
- int i;
-
- /* on first init, setup the stack array */
- if (stack == NULL) {
- for (i=0; i < sizeof(stackarray)/sizeof(stackarray[0]); ++i) {
- stackarray[i].v_type = V_NULL;
- stackarray[i].v_subtype = V_NOSUBTYPE;
- }
- stack = stackarray;
-
- /* on subsequent inits, free the old stack */
- } else {
- while (stack > stackarray) {
- freevalue(stack--);
- }
- }
- }
-
-
- /*
- * Compute the result of a function by interpreting opcodes.
- * Arguments have just been pushed onto the evaluation stack.
- */
- void
- calculate(fp, argcount)
- register FUNC *fp; /* function to calculate */
- int argcount; /* number of arguments called with */
- {
- register unsigned long pc; /* current pc inside function */
- register struct opcode *op; /* current opcode pointer */
- register VALUE *locals; /* pointer to local variables */
- long oldline; /* old value of line counter */
- unsigned int opnum; /* current opcode number */
- int origargcount; /* original number of arguments */
- int i; /* loop counter */
- BOOL dojump; /* TRUE if jump is to occur */
- char *oldname; /* old function name being executed */
- VALUE *beginstack; /* beginning of stack frame */
- VALUE *args; /* pointer to function arguments */
- VALUE retval; /* function return value */
- VALUE localtable[QUICKLOCALS]; /* some local variables */
-
- oldname = funcname;
- oldline = funcline;
- funcname = fp->f_name;
- funcline = 0;
- origargcount = argcount;
- while (argcount < fp->f_paramcount) {
- stack++;
- stack->v_type = V_NULL;
- argcount++;
- }
- locals = localtable;
- if (fp->f_localcount > QUICKLOCALS) {
- locals = (VALUE *) malloc(sizeof(VALUE) * fp->f_localcount);
- if (locals == NULL)
- math_error("No memory for local variables");
- }
- for (i = 0; i < fp->f_localcount; i++) {
- locals[i].v_num = qlink(&_qzero_);
- locals[i].v_type = V_NUM;
- locals[i].v_subtype = V_NOSUBTYPE;
- }
- pc = 0;
- beginstack = stack;
- args = beginstack - (argcount - 1);
- for (;;) {
- if (abortlevel >= ABORT_OPCODE)
- math_error("Calculation aborted in opcode");
- if (pc >= fp->f_opcodecount)
- math_error("Function pc out of range");
- if (stack > &stackarray[MAXSTACK-3])
- math_error("Evaluation stack depth exceeded");
- opnum = fp->f_opcodes[pc];
- if (opnum > MAX_OPCODE)
- math_error("Function opcode out of range");
- op = &opcodes[opnum];
- if (traceflags & TRACE_OPCODES) {
- printf("%8s, pc %4ld: ", fp->f_name, pc);
- (void)dumpop(&fp->f_opcodes[pc]);
- }
- /*
- * Now call the opcode routine appropriately.
- */
- pc++;
- switch (op->o_type) {
- case OPNUL: /* no extra arguments */
- (*op->o_func)(fp);
- break;
-
- case OPONE: /* one extra integer argument */
- (*op->o_func)(fp, fp->f_opcodes[pc++]);
- break;
-
- case OPTWO: /* two extra integer arguments */
- (*op->o_func)(fp, fp->f_opcodes[pc],
- fp->f_opcodes[pc+1]);
- pc += 2;
- break;
-
- case OPJMP: /* jump opcodes (one extra pointer arg) */
- dojump = FALSE;
- (*op->o_func)(fp, &dojump);
- if (dojump)
- pc = fp->f_opcodes[pc];
- else
- pc++;
- break;
-
- case OPGLB: /* global symbol reference (pointer arg) */
- case OPSTR: /* string constant address */
- (*op->o_func)(fp, *((char **) &fp->f_opcodes[pc]));
- pc += PTR_SIZE;
- break;
-
- case OPLOC: /* local variable reference */
- (*op->o_func)(fp, locals, fp->f_opcodes[pc++]);
- break;
-
- case OPPAR: /* parameter variable reference */
- (*op->o_func)(fp, argcount, args, fp->f_opcodes[pc++]);
- break;
-
- case OPARG: /* parameter variable reference */
- (*op->o_func)(fp, origargcount, args);
- break;
-
- case OPRET: /* return from function */
- if (stack->v_type == V_ADDR)
- copyvalue(stack->v_addr, stack);
- for (i = 0; i < fp->f_localcount; i++)
- freevalue(&locals[i]);
- if (locals != localtable)
- free(locals);
- if (stack != &beginstack[1])
- math_error("Misaligned stack");
- if (argcount <= 0) {
- funcname = oldname;
- funcline = oldline;
- return;
- }
- retval = *stack--;
- while (--argcount >= 0)
- freevalue(stack--);
- *++stack = retval;
- funcname = oldname;
- funcline = oldline;
- return;
-
- case OPSTI: /* static initialization code */
- fp->f_opcodes[pc++ - 1] = OP_JUMP;
- break;
-
- default:
- math_error("Unknown opcode type");
- }
- }
- }
-
-
- /*
- * Dump an opcode at a particular address.
- * Returns the size of the opcode so that it can easily be skipped over.
- */
- int
- dumpop(pc)
- long *pc; /* location of the opcode */
- {
- unsigned long op; /* opcode number */
-
- op = *pc++;
- if (op <= MAX_OPCODE)
- printf("%s", opcodes[op].o_name);
- else
- printf("OP%ld", op);
- switch (op) {
- case OP_LOCALADDR: case OP_LOCALVALUE:
- printf(" %s\n", localname(*pc));
- return 2;
- case OP_GLOBALADDR: case OP_GLOBALVALUE:
- printf(" %s\n", globalname(*((GLOBAL **) pc)));
- return (1 + PTR_SIZE);
- case OP_PARAMADDR: case OP_PARAMVALUE:
- printf(" %s\n", paramname(*pc));
- return 2;
- case OP_PRINTSTRING: case OP_STRING:
- printf(" \"%s\"\n", *((char **) pc));
- return (1 + PTR_SIZE);
- case OP_QUIT:
- if (*(char **) pc)
- printf(" \"%s\"\n", *((char **) pc));
- else
- printf("\n");
- return (1 + PTR_SIZE);
- case OP_INDEXADDR:
- printf(" %ld %ld\n", pc[0], pc[1]);
- return 3;
- case OP_PRINT: case OP_JUMPEQ: case OP_JUMPNE: case OP_JUMP:
- case OP_CONDORJUMP: case OP_CONDANDJUMP: case OP_CASEJUMP:
- case OP_INITSTATIC: case OP_MATCREATE: case OP_OBJCREATE:
- printf(" %ld\n", *pc);
- return 2;
- case OP_NUMBER: case OP_IMAGINARY:
- qprintf(" %r\n", constvalue(*pc));
- return 2;
- case OP_DEBUG:
- printf(" line %ld\n", *pc);
- return 2;
- case OP_CALL:
- printf(" %s with %ld args\n", builtinname(pc[0]), pc[1]);
- return 3;
- case OP_USERCALL:
- printf(" %s with %ld args\n", namefunc(pc[0]), pc[1]);
- return 3;
- default:
- printf("\n");
- return 1;
- }
- }
-
-
- /*
- * The various opcodes
- */
-
- static void
- o_nop()
- {
- }
-
-
- static void
- o_localaddr(fp, locals, index)
- FUNC *fp;
- VALUE *locals;
- long index;
- {
- if ((unsigned long)index >= fp->f_localcount)
- math_error("Bad local variable index");
- locals += index;
- stack++;
- stack->v_addr = locals;
- stack->v_type = V_ADDR;
- }
-
-
- /*ARGSUSED*/
- static void
- o_globaladdr(fp, sp)
- FUNC *fp;
- GLOBAL *sp;
- {
- if (sp == NULL)
- math_error("Global variable \"%s\" not initialized", sp->g_name);
- stack++;
- stack->v_addr = &sp->g_value;
- stack->v_type = V_ADDR;
- }
-
-
- /*ARGSUSED*/
- static void
- o_paramaddr(fp, argcount, args, index)
- FUNC *fp;
- int argcount;
- VALUE *args;
- long index;
- {
- if ((unsigned long)index >= argcount)
- math_error("Bad parameter index");
- args += index;
- stack++;
- if (args->v_type == V_ADDR)
- stack->v_addr = args->v_addr;
- else
- stack->v_addr = args;
- stack->v_type = V_ADDR;
- }
-
-
- static void
- o_localvalue(fp, locals, index)
- FUNC *fp;
- VALUE *locals;
- long index;
- {
- if ((unsigned long)index >= fp->f_localcount)
- math_error("Bad local variable index");
- locals += index;
- copyvalue(locals, ++stack);
- }
-
-
- /*ARGSUSED*/
- static void
- o_globalvalue(fp, sp)
- FUNC *fp;
- GLOBAL *sp; /* global symbol */
- {
- if (sp == NULL)
- math_error("Global variable not defined");
- copyvalue(&sp->g_value, ++stack);
- }
-
-
- /*ARGSUSED*/
- static void
- o_paramvalue(fp, argcount, args, index)
- FUNC *fp;
- int argcount;
- VALUE *args;
- long index;
- {
- if ((unsigned long)index >= argcount)
- math_error("Bad paramaeter index");
- args += index;
- if (args->v_type == V_ADDR)
- args = args->v_addr;
- copyvalue(args, ++stack);
- }
-
-
- static void
- o_argvalue(fp, argcount, args)
- FUNC *fp;
- int argcount;
- VALUE *args;
- {
- VALUE *vp;
- long index;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if ((vp->v_type != V_NUM) || qisneg(vp->v_num) ||
- qisfrac(vp->v_num))
- math_error("Illegal argument for arg function");
- if (qiszero(vp->v_num)) {
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = itoq((long) argcount);
- stack->v_type = V_NUM;
- return;
- }
- index = qtoi(vp->v_num) - 1;
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- (void) o_paramvalue(fp, argcount, args, index);
- }
-
-
- /*ARGSUSED*/
- static void
- o_number(fp, arg)
- FUNC *fp;
- long arg;
- {
- NUMBER *q;
-
- q = constvalue(arg);
- if (q == NULL)
- math_error("Numeric constant value not found");
- stack++;
- stack->v_num = qlink(q);
- stack->v_type = V_NUM;
- }
-
-
- /*ARGSUSED*/
- static void
- o_imaginary(fp, arg)
- FUNC *fp;
- long arg;
- {
- NUMBER *q;
- COMPLEX *c;
-
- q = constvalue(arg);
- if (q == NULL)
- math_error("Numeric constant value not found");
- stack++;
- if (qiszero(q)) {
- stack->v_num = qlink(q);
- stack->v_type = V_NUM;
- return;
- }
- c = comalloc();
- c->real = qlink(&_qzero_);
- c->imag = qlink(q);
- stack->v_com = c;
- stack->v_type = V_COM;
- }
-
-
- /*ARGSUSED*/
- static void
- o_string(fp, cp)
- FUNC *fp;
- char *cp;
- {
- stack++;
- stack->v_str = cp;
- stack->v_type = V_STR;
- stack->v_subtype = V_STRLITERAL;
- }
-
-
- static void
- o_undef()
- {
- stack++;
- stack->v_type = V_NULL;
- }
-
-
- /*ARGSUSED*/
- static void
- o_matcreate(fp, dim)
- FUNC *fp;
- long dim;
- {
- register MATRIX *mp; /* matrix being defined */
- NUMBER *num1; /* first number from stack */
- NUMBER *num2; /* second number from stack */
- VALUE *vp; /* value being defined */
- VALUE *v1, *v2;
- long min[MAXDIM]; /* minimum range */
- long max[MAXDIM]; /* maximum range */
- long i; /* index */
- long tmp; /* temporary */
- long size; /* size of matrix */
-
- if ((dim <= 0) || (dim > MAXDIM))
- math_error("Bad dimension %ld for matrix", dim);
- if (stack[-2*dim].v_type != V_ADDR)
- math_error("Attempting to init matrix for non-address");
- size = 1;
- for (i = dim - 1; i >= 0; i--) {
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM))
- math_error("Non-numeric bounds for matrix");
- num1 = v1->v_num;
- num2 = v2->v_num;
- if (qisfrac(num1) || qisfrac(num2))
- math_error("Non-integral bounds for matrix");
- if (zge31b(num1->num) || zge31b(num2->num))
- math_error("Very large bounds for matrix");
- min[i] = qtoi(num1);
- max[i] = qtoi(num2);
- if (min[i] > max[i]) {
- tmp = min[i];
- min[i] = max[i];
- max[i] = tmp;
- }
- size *= (max[i] - min[i] + 1);
- if (size > 10000000)
- math_error("Very large size for matrix");
- freevalue(stack--);
- freevalue(stack--);
- }
- mp = matalloc(size);
- mp->m_dim = dim;
- for (i = 0; i < dim; i++) {
- mp->m_min[i] = min[i];
- mp->m_max[i] = max[i];
- }
- vp = mp->m_table;
- for (i = 0; i < size; i++) {
- vp->v_type = V_NUM;
- vp->v_num = qlink(&_qzero_);
- vp++;
- }
- vp = stack[0].v_addr;
- vp->v_type = V_MAT;
- vp->v_mat = mp;
- }
-
-
- /*ARGSUSED*/
- static void
- o_eleminit(fp, index)
- FUNC *fp;
- long index;
- {
- VALUE *vp;
- static VALUE *oldvp;
- MATRIX *mp;
- OBJECT *op;
-
- vp = &stack[-1];
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- switch (vp->v_type) {
- case V_MAT:
- mp = vp->v_mat;
- if ((index < 0) || (index >= mp->m_size))
- math_error("Too many initializer values");
- oldvp = &mp->m_table[index];
- break;
- case V_OBJ:
- op = vp->v_obj;
- if ((index < 0) || (index >= op->o_actions->count))
- math_error("Too many initializer values");
- oldvp = &op->o_table[index];
- break;
- default:
- math_error("Attempt to initialize non matrix or object");
- }
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- freevalue(oldvp);
- copyvalue(vp, oldvp);
- stack--;
- }
-
-
- /*ARGSUSED*/
- static void
- o_indexaddr(fp, dim, writeflag)
- FUNC *fp;
- long dim; /* dimension of matrix */
- long writeflag; /* nonzero if element will be written */
- {
- int i;
- BOOL flag;
- VALUE *val;
- VALUE *vp;
- VALUE indices[MAXDIM]; /* index values */
-
- flag = (writeflag != 0);
- if ((dim <= 0) || (dim > MAXDIM))
- math_error("Too many dimensions for indexing");
- val = &stack[-dim];
- if (val->v_type != V_ADDR)
- math_error("Non-pointer for index operation");
- val = val->v_addr;
- vp = &stack[-dim + 1];
- for (i = 0; i < dim; i++) {
- if (vp->v_type == V_ADDR)
- indices[i] = vp->v_addr[0];
- else
- indices[i] = vp[0];
- vp++;
- }
- switch (val->v_type) {
- case V_MAT:
- vp = matindex(val->v_mat, flag, dim, indices);
- break;
- case V_ASSOC:
- vp = associndex(val->v_assoc, flag, dim, indices);
- break;
- default:
- math_error("Illegal value for indexing");
- }
- while (dim-- > 0)
- freevalue(stack--);
- stack->v_type = V_ADDR;
- stack->v_addr = vp;
- }
-
-
- /*ARGSUSED*/
- static void
- o_elemaddr(fp, index)
- FUNC *fp;
- long index;
- {
- if (stack->v_type != V_ADDR)
- math_error("Non-pointer for element reference");
- if (stack->v_addr->v_type != V_OBJ)
- math_error("Referencing element of non-object");
- index = objoffset(stack->v_addr->v_obj, index);
- if (index < 0)
- math_error("Element does not exist for object");
- stack->v_addr = &stack->v_addr->v_obj->o_table[index];
- }
-
-
- static void
- o_elemvalue(fp, index)
- FUNC *fp;
- long index;
- {
- if (stack->v_type != V_OBJ) {
- (void) o_elemaddr(fp, index);
- (void) o_getvalue();
- return;
- }
- index = objoffset(stack->v_obj, index);
- if (index < 0)
- math_error("Element does not exist for object");
- copyvalue(&stack->v_obj->o_table[index], stack);
- }
-
-
- /*ARGSUSED*/
- static void
- o_objcreate(fp, arg)
- FUNC *fp;
- long arg;
- {
- OBJECT *op; /* object being created */
- VALUE *vp; /* value being defined */
-
- if (stack->v_type != V_ADDR)
- math_error("Attempting to init object for non-address");
- op = objalloc(arg);
- vp = stack->v_addr;
- vp->v_type = V_OBJ;
- vp->v_obj = op;
- }
-
-
- static void
- o_assign()
- {
- VALUE *var; /* variable value */
- VALUE *vp;
-
- var = &stack[-1];
- if (var->v_type != V_ADDR)
- math_error("Assignment into non-variable");
- var = var->v_addr;
- stack[-1] = stack[0];
- stack--;
- vp = stack;
- if (vp->v_type == V_ADDR) {
- vp = vp->v_addr;
- if (vp == var)
- return;
- }
- freevalue(var);
- copyvalue(vp, var);
- }
-
-
- static void
- o_assignpop()
- {
- VALUE *var; /* variable value */
- VALUE *vp;
-
- var = &stack[-1];
- if (var->v_type != V_ADDR)
- math_error("Assignment into non-variable");
- var = var->v_addr;
- vp = &stack[0];
- if ((vp->v_type == V_ADDR) && (vp->v_addr == var)) {
- stack -= 2;
- return;
- }
- freevalue(var);
- if (vp->v_type == V_ADDR)
- copyvalue(vp->v_addr, var);
- else
- *var = *vp;
- stack -= 2;
- }
-
-
- static void
- o_swap()
- {
- VALUE *v1, *v2; /* variables to be swapped */
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if ((v1->v_type != V_ADDR) || (v2->v_type != V_ADDR))
- math_error("Swapping non-variables");
- tmp = v1->v_addr[0];
- v1->v_addr[0] = v2->v_addr[0];
- v2->v_addr[0] = tmp;
- stack--;
- stack->v_type = V_NULL;
- }
-
-
- static void
- o_add()
- {
- VALUE *v1, *v2;
- NUMBER *q;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM)) {
- addvalue(v1, v2, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- return;
- }
- q = qadd(v1->v_num, v2->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_sub()
- {
- VALUE *v1, *v2;
- NUMBER *q;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM)) {
- subvalue(v1, v2, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- return;
- }
- q = qsub(v1->v_num, v2->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_mul()
- {
- VALUE *v1, *v2;
- NUMBER *q;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM)) {
- mulvalue(v1, v2, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- return;
- }
- q = qmul(v1->v_num, v2->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_power()
- {
- VALUE *v1, *v2;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- powivalue(v1, v2, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- static void
- o_div()
- {
- VALUE *v1, *v2;
- NUMBER *q;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM)) {
- divvalue(v1, v2, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- return;
- }
- q = qdiv(v1->v_num, v2->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_quo()
- {
- VALUE *v1, *v2;
- NUMBER *q;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM)) {
- quovalue(v1, v2, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- return;
- }
- q = qquo(v1->v_num, v2->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_mod()
- {
- VALUE *v1, *v2;
- NUMBER *q;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM)) {
- modvalue(v1, v2, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- return;
- }
- q = qmod(v1->v_num, v2->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_quomod()
- {
- VALUE *v1, *v2, *v3, *v4;
- VALUE valquo, valmod;
- BOOL res;
-
- v1 = &stack[-3];
- v2 = &stack[-2];
- v3 = &stack[-1];
- v4 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v3->v_type != V_ADDR) || (v4->v_type != V_ADDR))
- math_error("Non-variable for quomod");
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM))
- math_error("Non-reals for quomod");
- v3 = v3->v_addr;
- v4 = v4->v_addr;
- valquo.v_type = V_NUM;
- valmod.v_type = V_NUM;
- res = qquomod(v1->v_num, v2->v_num, &valquo.v_num, &valmod.v_num);
- freevalue(stack--);
- freevalue(stack--);
- stack--;
- stack->v_num = (res ? qlink(&_qone_) : qlink(&_qzero_));
- stack->v_type = V_NUM;
- freevalue(v3);
- freevalue(v4);
- *v3 = valquo;
- *v4 = valmod;
- }
-
-
- static void
- o_and()
- {
- VALUE *v1, *v2;
- NUMBER *q;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM))
- math_error("Non-numerics for and");
- q = qand(v1->v_num, v2->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_or()
- {
- VALUE *v1, *v2;
- NUMBER *q;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM))
- math_error("Non-numerics for or");
- q = qor(v1->v_num, v2->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_not()
- {
- VALUE *vp;
- int r;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- r = testvalue(vp);
- freevalue(stack);
- stack->v_num = (r ? qlink(&_qzero_) : qlink(&_qone_));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_negate()
- {
- VALUE *vp;
- NUMBER *q;
- VALUE tmp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- q = qneg(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- return;
- }
- negvalue(vp, &tmp);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- static void
- o_invert()
- {
- VALUE *vp;
- NUMBER *q;
- VALUE tmp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- q = qinv(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- return;
- }
- invertvalue(vp, &tmp);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- static void
- o_scale()
- {
- VALUE *v1, *v2;
- NUMBER *q;
- VALUE tmp;
-
- v1 = &stack[0];
- v2 = &stack[-1];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM)) {
- scalevalue(v2, v1, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- return;
- }
- q = v1->v_num;
- if (qisfrac(q))
- math_error("Non-integral scaling factor");
- if (zge31b(q->num))
- math_error("Very large scaling factor");
- q = qscale(v2->v_num, qtoi(q));
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_int()
- {
- VALUE *vp;
- NUMBER *q;
- VALUE tmp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- if (qisint(vp->v_num) && (stack->v_type == V_NUM))
- return;
- q = qint(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- return;
- }
- intvalue(vp, &tmp);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- static void
- o_frac()
- {
- VALUE *vp;
- NUMBER *q;
- VALUE tmp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- q = qfrac(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- return;
- }
- fracvalue(vp, &tmp);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- static void
- o_abs()
- {
- VALUE *v1, *v2;
- NUMBER *q;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_NUM) || (v2->v_type != V_NUM) ||
- !qispos(v2->v_num))
- {
- absvalue(v1, v2, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- return;
- }
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- if ((stack->v_type == V_NUM) && !qisneg(v1->v_num))
- return;
- q = qabs(v1->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_norm()
- {
- VALUE *vp;
- NUMBER *q;
- VALUE tmp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- q = qsquare(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- return;
- }
- normvalue(vp, &tmp);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- static void
- o_square()
- {
- VALUE *vp;
- NUMBER *q;
- VALUE tmp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- q = qsquare(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- return;
- }
- squarevalue(vp, &tmp);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- static void
- o_istype()
- {
- VALUE *v1, *v2;
- int r;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if ((v1->v_type != V_OBJ) || (v2->v_type != V_OBJ))
- r = (v1->v_type == v2->v_type);
- else
- r = (v1->v_obj->o_actions == v2->v_obj->o_actions);
- freevalue(stack--);
- freevalue(stack);
- stack->v_num = itoq((long) r);
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_isint()
- {
- VALUE *vp;
- NUMBER *q;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = stack->v_addr;
- if (vp->v_type != V_NUM) {
- freevalue(stack);
- stack->v_num = qlink(&_qzero_);
- stack->v_type = V_NUM;
- return;
- }
- if (qisint(vp->v_num))
- q = qlink(&_qone_);
- else
- q = qlink(&_qzero_);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_isnum()
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- switch (vp->v_type) {
- case V_NUM:
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- break;
- case V_COM:
- if (stack->v_type == V_COM)
- comfree(stack->v_com);
- break;
- default:
- freevalue(stack);
- stack->v_num = qlink(&_qzero_);
- stack->v_type = V_NUM;
- return;
- }
- stack->v_num = qlink(&_qone_);
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_ismat()
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type != V_MAT) {
- freevalue(stack);
- stack->v_num = qlink(&_qzero_);
- stack->v_type = V_NUM;
- return;
- }
- freevalue(stack);
- stack->v_type = V_NUM;
- stack->v_num = qlink(&_qone_);
- }
-
-
- static void
- o_islist()
- {
- VALUE *vp;
- int r;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- r = (vp->v_type == V_LIST);
- freevalue(stack);
- stack->v_num = (r ? qlink(&_qone_) : qlink(&_qzero_));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_isobj()
- {
- VALUE *vp;
- int r;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- r = (vp->v_type == V_OBJ);
- freevalue(stack);
- stack->v_num = (r ? qlink(&_qone_) : qlink(&_qzero_));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_isstr()
- {
- VALUE *vp;
- int r;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- r = (vp->v_type == V_STR);
- freevalue(stack);
- stack->v_num = (r ? qlink(&_qone_) : qlink(&_qzero_));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_isfile()
- {
- VALUE *vp;
- int r;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- r = (vp->v_type == V_FILE);
- freevalue(stack);
- stack->v_num = (r ? qlink(&_qone_) : qlink(&_qzero_));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_isassoc()
- {
- VALUE *vp;
- int r;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- r = (vp->v_type == V_ASSOC);
- freevalue(stack);
- stack->v_num = (r ? qlink(&_qone_) : qlink(&_qzero_));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_issimple()
- {
- VALUE *vp;
- int r;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- r = 0;
- switch (vp->v_type) {
- case V_NULL:
- case V_NUM:
- case V_COM:
- case V_STR:
- r = 1;
- }
- freevalue(stack);
- stack->v_num = (r ? qlink(&_qone_) : qlink(&_qzero_));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_isodd()
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if ((vp->v_type == V_NUM) && qisodd(vp->v_num)) {
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = qlink(&_qone_);
- stack->v_type = V_NUM;
- return;
- }
- freevalue(stack);
- stack->v_num = qlink(&_qzero_);
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_iseven()
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if ((vp->v_type == V_NUM) && qiseven(vp->v_num)) {
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = qlink(&_qone_);
- stack->v_type = V_NUM;
- return;
- }
- freevalue(stack);
- stack->v_num = qlink(&_qzero_);
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_isreal()
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = qlink(&_qone_);
- stack->v_type = V_NUM;
- return;
- }
- freevalue(stack);
- stack->v_num = qlink(&_qzero_);
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_isnull()
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type != V_NULL) {
- freevalue(stack);
- stack->v_num = qlink(&_qzero_);
- stack->v_type = V_NUM;
- return;
- }
- freevalue(stack);
- stack->v_num = qlink(&_qone_);
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_re()
- {
- VALUE *vp;
- NUMBER *q;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- if (stack->v_type == V_ADDR) {
- stack->v_num = qlink(vp->v_num);
- stack->v_type = V_NUM;
- }
- return;
- }
- if (vp->v_type != V_COM)
- math_error("Taking real part of non-number");
- q = qlink(vp->v_com->real);
- if (stack->v_type == V_COM)
- comfree(stack->v_com);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_im()
- {
- VALUE *vp;
- NUMBER *q;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = qlink(&_qzero_);
- stack->v_type = V_NUM;
- return;
- }
- if (vp->v_type != V_COM)
- math_error("Taking imaginary part of non-number");
- q = qlink(vp->v_com->imag);
- if (stack->v_type == V_COM)
- comfree(stack->v_com);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_conjugate()
- {
- VALUE *vp;
- VALUE tmp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- if (stack->v_type == V_ADDR) {
- stack->v_num = qlink(vp->v_num);
- stack->v_type = V_NUM;
- }
- return;
- }
- conjvalue(vp, &tmp);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- static void
- o_fiaddr()
- {
- register MATRIX *m; /* current matrix element */
- NUMBER *q; /* index value */
- LIST *lp; /* list header */
- ASSOC *ap; /* association header */
- VALUE *vp; /* stack value */
- long index; /* index value as an integer */
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type != V_NUM)
- math_error("Fast indexing by non-number");
- q = vp->v_num;
- if (qisfrac(q))
- math_error("Fast indexing by non-integer");
- index = qtoi(q);
- if (zge31b(q->num) || (index < 0))
- math_error("Index out of range for fast indexing");
- if (stack->v_type == V_NUM)
- qfree(q);
- stack--;
- vp = stack;
- if (vp->v_type != V_ADDR)
- math_error("Bad value for fast indexing");
- switch (vp->v_addr->v_type) {
- case V_OBJ:
- if (index >= vp->v_addr->v_obj->o_actions->count)
- math_error("Index out of bounds for object");
- vp->v_addr = vp->v_addr->v_obj->o_table + index;
- break;
- case V_MAT:
- m = vp->v_addr->v_mat;
- if (index >= m->m_size)
- math_error("Index out of bounds for matrix");
- vp->v_addr = m->m_table + index;
- break;
- case V_LIST:
- lp = vp->v_addr->v_list;
- vp->v_addr = listfindex(lp, index);
- if (vp->v_addr == NULL)
- math_error("Index out of bounds for list");
- break;
- case V_ASSOC:
- ap = vp->v_addr->v_assoc;
- vp->v_addr = assocfindex(ap, index);
- if (vp->v_addr == NULL)
- math_error("Index out of bounds for association");
- break;
- default:
- math_error("Bad variable type for fast indexing");
- }
- }
-
-
- static void
- o_fivalue()
- {
- (void) o_fiaddr();
- (void) o_getvalue();
- }
-
-
- static void
- o_sgn()
- {
- VALUE *vp;
- NUMBER *q;
- VALUE val;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- switch (vp->v_type) {
- case V_NUM:
- q = qsign(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(vp->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- break;
- case V_OBJ:
- val = objcall(OBJ_SGN, vp, NULL_VALUE, NULL_VALUE);
- q = itoq(val.v_int);
- freevalue(stack);
- stack->v_num = q;
- stack->v_type = V_NUM;
- break;
- default:
- math_error("Bad value for sgn");
- }
- }
-
-
- static void
- o_numerator()
- {
- VALUE *vp;
- NUMBER *q;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type != V_NUM)
- math_error("Numerator of non-number");
- if ((stack->v_type == V_NUM) && qisint(vp->v_num))
- return;
- q = qnum(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_denominator()
- {
- VALUE *vp;
- NUMBER *q;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type != V_NUM)
- math_error("Denominator of non-number");
- q = qden(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack->v_num = q;
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_duplicate()
- {
- copyvalue(stack, stack + 1);
- stack++;
- }
-
-
- static void
- o_dupvalue()
- {
- if (stack->v_type == V_ADDR)
- copyvalue(stack->v_addr, stack + 1);
- else
- copyvalue(stack, stack + 1);
- stack++;
- }
-
-
- static void
- o_pop()
- {
- freevalue(stack--);
- }
-
-
- static void
- o_return()
- {
- }
-
-
- /*ARGSUSED*/
- static void
- o_jumpeq(fp, dojump)
- FUNC *fp;
- BOOL *dojump;
- {
- VALUE *vp;
- int i; /* result of comparison */
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- i = !qiszero(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- } else {
- i = testvalue(vp);
- freevalue(stack);
- }
- stack--;
- if (!i)
- *dojump = TRUE;
- }
-
-
- /*ARGSUSED*/
- static void
- o_jumpne(fp, dojump)
- FUNC *fp;
- BOOL *dojump;
- {
- VALUE *vp;
- int i; /* result of comparison */
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- i = !qiszero(vp->v_num);
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- } else {
- i = testvalue(vp);
- freevalue(stack);
- }
- stack--;
- if (i)
- *dojump = TRUE;
- }
-
-
- /*ARGSUSED*/
- static void
- o_condorjump(fp, dojump)
- FUNC *fp;
- BOOL *dojump;
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- if (!qiszero(vp->v_num)) {
- *dojump = TRUE;
- return;
- }
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- return;
- }
- if (testvalue(vp))
- *dojump = TRUE;
- else
- freevalue(stack--);
- }
-
-
- /*ARGSUSED*/
- static void
- o_condandjump(fp, dojump)
- FUNC *fp;
- BOOL *dojump;
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type == V_NUM) {
- if (qiszero(vp->v_num)) {
- *dojump = TRUE;
- return;
- }
- if (stack->v_type == V_NUM)
- qfree(stack->v_num);
- stack--;
- return;
- }
- if (!testvalue(vp))
- *dojump = TRUE;
- else
- freevalue(stack--);
- }
-
-
- /*
- * Compare the top two values on the stack for equality and jump if they are
- * different, popping off the top element, leaving the first one on the stack.
- * If they are equal, pop both values and do not jump.
- */
- /*ARGSUSED*/
- static void
- o_casejump(fp, dojump)
- FUNC *fp;
- BOOL *dojump;
- {
- VALUE *v1, *v2;
- int r;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- r = comparevalue(v1, v2);
- freevalue(stack--);
- if (r)
- *dojump = TRUE;
- else
- freevalue(stack--);
- }
-
-
- /*ARGSUSED*/
- static void
- o_jump(fp, dojump)
- FUNC *fp;
- BOOL *dojump;
- {
- *dojump = TRUE;
- }
-
-
- static void
- o_usercall(fp, index, argcount)
- FUNC *fp;
- long index, argcount;
- {
- fp = findfunc(index);
- if (fp == NULL)
- math_error("Function \"%s\" is undefined", namefunc(index));
- calculate(fp, (int) argcount);
- }
-
-
- /*ARGSUSED*/
- static void
- o_call(fp, index, argcount)
- FUNC *fp;
- long index, argcount;
- {
- VALUE result;
-
- result = builtinfunc(index, (int) argcount, stack);
- while (--argcount >= 0)
- freevalue(stack--);
- stack++;
- *stack = result;
- }
-
-
- static void
- o_getvalue()
- {
- if (stack->v_type == V_ADDR)
- copyvalue(stack->v_addr, stack);
- }
-
-
- static void
- o_cmp()
- {
- VALUE *v1, *v2;
- int r;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- r = relvalue(v1, v2);
- freevalue(stack--);
- freevalue(stack);
- stack->v_num = itoq((long) r);
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_eq()
- {
- VALUE *v1, *v2;
- int r;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- r = comparevalue(v1, v2);
- freevalue(stack--);
- freevalue(stack);
- stack->v_num = itoq((long) (r == 0));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_ne()
- {
- VALUE *v1, *v2;
- int r;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- r = comparevalue(v1, v2);
- freevalue(stack--);
- freevalue(stack);
- stack->v_num = itoq((long) (r != 0));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_le()
- {
- VALUE *v1, *v2;
- int r;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- r = relvalue(v1, v2);
- freevalue(stack--);
- freevalue(stack);
- stack->v_num = itoq((long) (r <= 0));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_ge()
- {
- VALUE *v1, *v2;
- int r;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- r = relvalue(v1, v2);
- freevalue(stack--);
- freevalue(stack);
- stack->v_num = itoq((long) (r >= 0));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_lt()
- {
- VALUE *v1, *v2;
- int r;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- r = relvalue(v1, v2);
- freevalue(stack--);
- freevalue(stack);
- stack->v_num = itoq((long) (r < 0));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_gt()
- {
- VALUE *v1, *v2;
- int r;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- r = relvalue(v1, v2);
- freevalue(stack--);
- freevalue(stack);
- stack->v_num = itoq((long) (r > 0));
- stack->v_type = V_NUM;
- }
-
-
- static void
- o_preinc()
- {
- NUMBER *q, **np;
- VALUE *vp, tmp;
-
- if (stack->v_type != V_ADDR)
- math_error("Preincrementing non-variable");
- if (stack->v_addr->v_type == V_NUM) {
- np = &stack->v_addr->v_num;
- q = qinc(*np);
- qfree(*np);
- *np = q;
- stack->v_type = V_NUM;
- stack->v_num = qlink(q);
- return;
- }
- vp = stack->v_addr;
- incvalue(vp, &tmp);
- freevalue(vp);
- *vp = tmp;
- copyvalue(&tmp, stack);
- }
-
-
- static void
- o_predec()
- {
- NUMBER *q, **np;
- VALUE *vp, tmp;
-
- if (stack->v_type != V_ADDR)
- math_error("Predecrementing non-variable");
- if (stack->v_addr->v_type == V_NUM) {
- np = &stack->v_addr->v_num;
- q = qdec(*np);
- qfree(*np);
- *np = q;
- stack->v_type = V_NUM;
- stack->v_num = qlink(q);
- return;
- }
- vp = stack->v_addr;
- decvalue(vp, &tmp);
- freevalue(vp);
- *vp = tmp;
- copyvalue(&tmp, stack);
- }
-
-
- static void
- o_postinc()
- {
- NUMBER *q, **np;
- VALUE *vp, tmp;
-
- if (stack->v_type != V_ADDR)
- math_error("Postincrementing non-variable");
- if (stack->v_addr->v_type == V_NUM) {
- np = &stack->v_addr->v_num;
- q = *np;
- *np = qinc(q);
- stack->v_type = V_NUM;
- stack->v_num = q;
- return;
- }
- vp = stack->v_addr;
- tmp = *vp;
- incvalue(&tmp, vp);
- *stack = tmp;
- }
-
-
- static void
- o_postdec()
- {
- NUMBER *q, **np;
- VALUE *vp, tmp;
-
- if (stack->v_type != V_ADDR)
- math_error("Postdecrementing non-variable");
- if (stack->v_addr->v_type == V_NUM) {
- np = &stack->v_addr->v_num;
- q = *np;
- *np = qdec(q);
- stack->v_type = V_NUM;
- stack->v_num = q;
- return;
- }
- vp = stack->v_addr;
- tmp = *vp;
- decvalue(&tmp, vp);
- *stack = tmp;
- }
-
-
- static void
- o_leftshift()
- {
- VALUE *v1, *v2;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- shiftvalue(v1, v2, FALSE, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- static void
- o_rightshift()
- {
- VALUE *v1, *v2;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- shiftvalue(v1, v2, TRUE, &tmp);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- /*ARGSUSED*/
- static void
- o_debug(fp, line)
- FUNC *fp;
- long line;
- {
- funcline = line;
- if (abortlevel >= ABORT_STATEMENT)
- math_error("Calculation aborted at statement boundary");
- }
-
-
- static void
- o_printresult()
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type != V_NULL) {
- if (tab_ok)
- math_chr('\t');
- printvalue(vp, PRINT_UNAMBIG);
- math_chr('\n');
- math_flush();
- }
- freevalue(stack--);
- }
-
-
- /*ARGSUSED*/
- static void
- o_print(fp, flags)
- FUNC *fp;
- long flags;
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- printvalue(vp, (int) flags);
- freevalue(stack--);
- if (traceflags & TRACE_OPCODES)
- printf("\n");
- math_flush();
- }
-
-
- static void
- o_printeol()
- {
- math_chr('\n');
- math_flush();
- }
-
-
- static void
- o_printspace()
- {
- math_chr(' ');
- if (traceflags & TRACE_OPCODES)
- printf("\n");
- }
-
-
- /*ARGSUSED*/
- static void
- o_printstring(fp, cp)
- FUNC *fp;
- char *cp;
- {
- math_str(cp);
- if (traceflags & TRACE_OPCODES)
- printf("\n");
- math_flush();
- }
-
-
- static void
- o_zero()
- {
- stack++;
- stack->v_type = V_NUM;
- stack->v_num = qlink(&_qzero_);
- }
-
-
- static void
- o_one()
- {
- stack++;
- stack->v_type = V_NUM;
- stack->v_num = qlink(&_qone_);
- }
-
-
- static void
- o_save(fp)
- FUNC *fp;
- {
- VALUE *vp;
-
- vp = stack;
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- freevalue(&fp->f_savedvalue);
- copyvalue(vp, &fp->f_savedvalue);
- }
-
-
- static void
- o_oldvalue()
- {
- copyvalue(&oldvalue, ++stack);
- }
-
-
- static void
- o_quit(fp, cp)
- FUNC *fp;
- char *cp;
- {
- if ((fp->f_name[0] == '*') && (fp->f_name[1] == '\0')) {
- if (cp)
- printf("%s\n", cp);
- while (stack > stackarray) {
- freevalue(stack--);
- }
- freevalue(stackarray);
- exit(0);
- }
- if (cp)
- math_error("%s", cp);
- math_error("quit statement executed");
- }
-
-
- static void
- o_getepsilon()
- {
- stack++;
- stack->v_type = V_NUM;
- stack->v_num = qlink(_epsilon_);
- }
-
-
- static void
- o_setepsilon()
- {
- VALUE *vp;
- NUMBER *newep;
-
- vp = &stack[0];
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type != V_NUM)
- math_error("Non-numeric for epsilon");
- newep = vp->v_num;
- stack->v_num = qlink(_epsilon_);
- setepsilon(newep);
- qfree(newep);
- }
-
-
- static void
- o_setconfig()
- {
- int type;
- VALUE *v1, *v2;
- VALUE tmp;
-
- v1 = &stack[-1];
- v2 = &stack[0];
- if (v1->v_type == V_ADDR)
- v1 = v1->v_addr;
- if (v2->v_type == V_ADDR)
- v2 = v2->v_addr;
- if (v1->v_type != V_STR)
- math_error("Non-string for config");
- type = configtype(v1->v_str);
- if (type < 0)
- math_error("Unknown config name \"%s\"", v1->v_str);
- getconfig(type, &tmp);
- setconfig(type, v2);
- freevalue(stack--);
- freevalue(stack);
- *stack = tmp;
- }
-
-
- static void
- o_getconfig()
- {
- int type;
- VALUE *vp;
-
- vp = &stack[0];
- if (vp->v_type == V_ADDR)
- vp = vp->v_addr;
- if (vp->v_type != V_STR)
- math_error("Non-string for config");
- type = configtype(vp->v_str);
- if (type < 0)
- math_error("Unknown config name \"%s\"", vp->v_str);
- freevalue(stack);
- getconfig(type, stack);
- }
-
-
- /*
- * Set the 'old' value to the last value saved during the calculation.
- */
- void
- updateoldvalue(fp)
- FUNC *fp;
- {
- if (fp->f_savedvalue.v_type == V_NULL)
- return;
- freevalue(&oldvalue);
- oldvalue = fp->f_savedvalue;
- fp->f_savedvalue.v_type = V_NULL;
- }
-
-
- /*
- * Routine called on any runtime error, to complain about it (with possible
- * arguments), and then longjump back to the top level command scanner.
- */
- #ifdef VARARGS
- # define VA_ALIST fmt, va_alist
- # define VA_DCL char *fmt; va_dcl
- #else
- # if defined(__STDC__) && __STDC__ == 1
- # define VA_ALIST char *fmt, ...
- # define VA_DCL
- # else
- # define VA_ALIST fmt
- # define VA_DCL char *fmt;
- # endif
- #endif
- /*VARARGS*/
- void
- math_error(VA_ALIST)
- VA_DCL
- {
- va_list ap;
- char buf[MAXERROR+1];
-
- if (funcname && (*funcname != '*'))
- fprintf(stderr, "\"%s\": ", funcname);
- if (funcline && ((funcname && (*funcname != '*')) || !inputisterminal()))
- fprintf(stderr, "line %ld: ", funcline);
- #ifdef VARARGS
- va_start(ap);
- #else
- va_start(ap, fmt);
- #endif
- vsprintf(buf, fmt, ap);
- va_end(ap);
- fprintf(stderr, "%s\n", buf);
- funcname = NULL;
- longjmp(jmpbuf, 1);
- }
-
- /* END CODE */
-