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- // This may look like C code, but it is really -*- C++ -*-
-
- /*
- Copyright (C) 1988 Free Software Foundation
- written by Doug Lea (dl@rocky.oswego.edu)
-
- This file is part of GNU CC.
-
- GNU CC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY. No author or distributor
- accepts responsibility to anyone for the consequences of using it
- or for whether it serves any particular purpose or works at all,
- unless he says so in writing. Refer to the GNU CC General Public
- License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- GNU CC, but only under the conditions described in the
- GNU CC General Public License. A copy of this license is
- supposed to have been given to you along with GNU CC so you
- can know your rights and responsibilities. It should be in a
- file named COPYING. Among other things, the copyright notice
- and this notice must be preserved on all copies.
- */
-
- /*
- arithmetic, etc. functions on built in types
- */
-
-
- #ifndef _builtin_h
- #pragma once
- #define _builtin_h 1
-
- overload clearbit;
- overload dec;
- overload gcd;
- overload hex;
- overload lcm;
- overload lg;
- overload oct;
- overload setbit;
- overload sign;
- overload sqr;
- overload testbit;
- overload even;
- overload odd;
-
- #include <std.h>
- #include <stddef.h>
- #include <math.h>
-
- long abs(long);
- double abs(double);
- void clearbit(long&, long);
- void setbit(long&, long);
- int testbit(long, long);
- int even(long);
- long gcd(long, long);
- long lg(long);
- long lcm(long, long);
- int odd(long);
- double pow(double, long);
- long pow(long, long);
- int sign(long);
- int sign(double);
- long sqr(long);
- double sqr(double);
- long sqrt(long);
-
- double start_timer();
- double return_elapsed_time(double);
-
- char* itoa(long x, int base = 10, int width = 0);
- char* hex(long x, int width = 0);
- char* oct(long x, int width = 0);
- char* dec(long x, int width = 0);
- char* form(const char* fmt ...);
- char* chr(char ch);
-
- unsigned int hashpjw(const char*);
- unsigned int multiplicativehash(int);
- unsigned int foldhash(double);
-
- extern void default_one_arg_error_handler(const char*);
- extern void default_two_arg_error_handler(const char*, const char*);
-
- extern two_arg_error_handler_t lib_error_handler;
-
- extern two_arg_error_handler_t
- set_lib_error_handler(two_arg_error_handler_t f);
-
- //#ifdef __OPTIMIZE__
-
- inline double abs(double _arg)
- {
- return (_arg < 0.0)? -_arg : _arg;
- }
-
- inline long abs(long _arg)
- {
- return (_arg < 0)? -_arg : _arg;
- }
-
- inline int sign(long _arg)
- {
- return (_arg == 0) ? 0 : ( (_arg > 0) ? 1 : -1 );
- }
-
- inline int sign(double _arg)
- {
- return (_arg == 0.0) ? 0 : ( (_arg > 0.0) ? 1 : -1 );
- }
-
- inline long sqr(long _arg)
- {
- return _arg * _arg;
- }
-
- inline double sqr(double _arg)
- {
- return _arg * _arg;
- }
-
- inline int even(long _arg)
- {
- return !(_arg & 1);
- }
-
- inline int odd(long _arg)
- {
- return (_arg & 1);
- }
-
- inline long lcm(long _x, long _y)
- {
- return _x / gcd(_x, _y) * _y;
- }
-
- inline void setbit(long& _x, long _b)
- {
- _x |= (1 << _b);
- }
-
- inline void clearbit(long& _x, long _b)
- {
- _x &= ~(1 << _b);
- }
-
- inline int testbit(long _x, long _b)
- {
- return ((_x & (1 << _b)) != 0);
- }
-
- //#endif
-
- #endif
-