home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Geek Gadgets 1
/
ADE-1.bin
/
ade-dist
/
binutils-2.7-src.tgz
/
tar.out
/
fsf
/
binutils
/
libiberty
/
copysign.c
< prev
next >
Wrap
C/C++ Source or Header
|
1996-09-28
|
2KB
|
141 lines
#include <ansidecl.h>
#ifdef __IEEE_BIG_ENDIAN
typedef union
{
double value;
struct
{
unsigned int sign : 1;
unsigned int exponent: 11;
unsigned int fraction0:4;
unsigned int fraction1:16;
unsigned int fraction2:16;
unsigned int fraction3:16;
} number;
struct
{
unsigned int sign : 1;
unsigned int exponent: 11;
unsigned int quiet:1;
unsigned int function0:3;
unsigned int function1:16;
unsigned int function2:16;
unsigned int function3:16;
} nan;
struct
{
unsigned long msw;
unsigned long lsw;
} parts;
long aslong[2];
} __ieee_double_shape_type;
#endif
#ifdef __IEEE_LITTLE_ENDIAN
typedef union
{
double value;
struct
{
#ifdef __SMALL_BITFIELDS
unsigned int fraction3:16;
unsigned int fraction2:16;
unsigned int fraction1:16;
unsigned int fraction0: 4;
#else
unsigned int fraction1:32;
unsigned int fraction0:20;
#endif
unsigned int exponent :11;
unsigned int sign : 1;
} number;
struct
{
#ifdef __SMALL_BITFIELDS
unsigned int function3:16;
unsigned int function2:16;
unsigned int function1:16;
unsigned int function0:3;
#else
unsigned int function1:32;
unsigned int function0:19;
#endif
unsigned int quiet:1;
unsigned int exponent: 11;
unsigned int sign : 1;
} nan;
struct
{
unsigned long lsw;
unsigned long msw;
} parts;
long aslong[2];
} __ieee_double_shape_type;
#endif
#ifdef __IEEE_BIG_ENDIAN
typedef union
{
float value;
struct
{
unsigned int sign : 1;
unsigned int exponent: 8;
unsigned int fraction0: 7;
unsigned int fraction1: 16;
} number;
struct
{
unsigned int sign:1;
unsigned int exponent:8;
unsigned int quiet:1;
unsigned int function0:6;
unsigned int function1:16;
} nan;
long p1;
} __ieee_float_shape_type;
#endif
#ifdef __IEEE_LITTLE_ENDIAN
typedef union
{
float value;
struct
{
unsigned int fraction0: 7;
unsigned int fraction1: 16;
unsigned int exponent: 8;
unsigned int sign : 1;
} number;
struct
{
unsigned int function1:16;
unsigned int function0:6;
unsigned int quiet:1;
unsigned int exponent:8;
unsigned int sign:1;
} nan;
long p1;
} __ieee_float_shape_type;
#endif
double DEFUN(copysign, (x, y), double x AND double y)
{
__ieee_double_shape_type a,b;
b.value = y;
a.value = x;
a.number.sign =b.number.sign;
return a.value;
}