|
|
/* @(#)w_remainder.c 5.1 93/09/24 */
|
/* @(#)w_remainder.c 5.1 93/09/24 */
|
/*
|
/*
|
* ====================================================
|
* ====================================================
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
*
|
*
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
* Permission to use, copy, modify, and distribute this
|
* Permission to use, copy, modify, and distribute this
|
* software is freely granted, provided that this notice
|
* software is freely granted, provided that this notice
|
* is preserved.
|
* is preserved.
|
* ====================================================
|
* ====================================================
|
*/
|
*/
|
|
|
/*
|
/*
|
FUNCTION
|
FUNCTION
|
<<remainder>>, <<remainderf>>---round and remainder
|
<<remainder>>, <<remainderf>>---round and remainder
|
INDEX
|
INDEX
|
remainder
|
remainder
|
INDEX
|
INDEX
|
remainderf
|
remainderf
|
|
|
ANSI_SYNOPSIS
|
ANSI_SYNOPSIS
|
#include <math.h>
|
#include <math.h>
|
double remainder(double <[x]>, double <[y]>);
|
double remainder(double <[x]>, double <[y]>);
|
float remainderf(float <[x]>, float <[y]>);
|
float remainderf(float <[x]>, float <[y]>);
|
|
|
TRAD_SYNOPSIS
|
TRAD_SYNOPSIS
|
#include <math.h>
|
#include <math.h>
|
double remainder(<[x]>,<[y]>)
|
double remainder(<[x]>,<[y]>)
|
double <[x]>, <[y]>;
|
double <[x]>, <[y]>;
|
float remainderf(<[x]>,<[y]>)
|
float remainderf(<[x]>,<[y]>)
|
float <[x]>, <[y]>;
|
float <[x]>, <[y]>;
|
|
|
DESCRIPTION
|
DESCRIPTION
|
<<remainder>> and <<remainderf>> find the remainder of
|
<<remainder>> and <<remainderf>> find the remainder of
|
<[x]>/<[y]>; this value is in the range -<[y]>/2 .. +<[y]>/2.
|
<[x]>/<[y]>; this value is in the range -<[y]>/2 .. +<[y]>/2.
|
|
|
RETURNS
|
RETURNS
|
<<remainder>> returns the integer result as a double.
|
<<remainder>> returns the integer result as a double.
|
|
|
PORTABILITY
|
PORTABILITY
|
<<remainder>> is a System V release 4.
|
<<remainder>> is a System V release 4.
|
<<remainderf>> is an extension.
|
<<remainderf>> is an extension.
|
|
|
*/
|
*/
|
|
|
/*
|
/*
|
* wrapper remainder(x,p)
|
* wrapper remainder(x,p)
|
*/
|
*/
|
|
|
#include "fdlibm.h"
|
#include "fdlibm.h"
|
#include <errno.h>
|
#include <errno.h>
|
|
|
#ifndef _DOUBLE_IS_32BITS
|
#ifndef _DOUBLE_IS_32BITS
|
|
|
#ifdef __STDC__
|
#ifdef __STDC__
|
double remainder(double x, double y) /* wrapper remainder */
|
double remainder(double x, double y) /* wrapper remainder */
|
#else
|
#else
|
double remainder(x,y) /* wrapper remainder */
|
double remainder(x,y) /* wrapper remainder */
|
double x,y;
|
double x,y;
|
#endif
|
#endif
|
{
|
{
|
#ifdef _IEEE_LIBM
|
#ifdef _IEEE_LIBM
|
return __ieee754_remainder(x,y);
|
return __ieee754_remainder(x,y);
|
#else
|
#else
|
double z;
|
double z;
|
struct exception exc;
|
struct exception exc;
|
z = __ieee754_remainder(x,y);
|
z = __ieee754_remainder(x,y);
|
if(_LIB_VERSION == _IEEE_ || isnan(y)) return z;
|
if(_LIB_VERSION == _IEEE_ || isnan(y)) return z;
|
if(y==0.0) {
|
if(y==0.0) {
|
/* remainder(x,0) */
|
/* remainder(x,0) */
|
exc.type = DOMAIN;
|
exc.type = DOMAIN;
|
exc.name = "remainder";
|
exc.name = "remainder";
|
exc.err = 0;
|
exc.err = 0;
|
exc.arg1 = x;
|
exc.arg1 = x;
|
exc.arg2 = y;
|
exc.arg2 = y;
|
exc.retval = 0.0/0.0;
|
exc.retval = 0.0/0.0;
|
if (_LIB_VERSION == _POSIX_)
|
if (_LIB_VERSION == _POSIX_)
|
errno = EDOM;
|
errno = EDOM;
|
else if (!matherr(&exc)) {
|
else if (!matherr(&exc)) {
|
errno = EDOM;
|
errno = EDOM;
|
}
|
}
|
if (exc.err != 0)
|
if (exc.err != 0)
|
errno = exc.err;
|
errno = exc.err;
|
return exc.retval;
|
return exc.retval;
|
} else
|
} else
|
return z;
|
return z;
|
#endif
|
#endif
|
}
|
}
|
|
|
#endif /* defined(_DOUBLE_IS_32BITS) */
|
#endif /* defined(_DOUBLE_IS_32BITS) */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
