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/*

 * ====================================================

 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.

 *

 * Developed at SunPro, a Sun Microsystems, Inc. business.

 * Permission to use, copy, modify, and distribute this

 * software is freely granted, provided that this notice

 * is preserved.

 * ====================================================

 */

FUNCTION

<>, <>---round and  remainder

INDEX

	remainder

INDEX

	remainderf

	#include 

	double remainder(double <[x]>, double <[y]>);

	float remainderf(float <[x]>, float <[y]>);

	#include 

	double remainder(<[x]>,<[y]>)

	double <[x]>, <[y]>;

	float remainderf(<[x]>,<[y]>)

	float <[x]>, <[y]>;

<> and <> find the remainder of

<[x]>/<[y]>; this value is in the range -<[y]>/2 .. +<[y]>/2.

<> returns the integer result as a double.

<> is a System V release 4.

<> is an extension.

 * wrapper remainder(x,p)

 */

#include 

	double remainder(double x, double y)	/* wrapper remainder */

#else

	double remainder(x,y)			/* wrapper remainder */

	double x,y;

#endif

{

#ifdef _IEEE_LIBM

	return __ieee754_remainder(x,y);

#else

	double z;

	struct exception exc;

	z = __ieee754_remainder(x,y);

	if(_LIB_VERSION == _IEEE_ || isnan(y)) return z;

	if(y==0.0) {

            /* remainder(x,0) */

            exc.type = DOMAIN;

            exc.name = "remainder";

	    exc.err = 0;

	    exc.arg1 = x;

	    exc.arg2 = y;

            exc.retval = 0.0/0.0;

            if (_LIB_VERSION == _POSIX_)

               errno = EDOM;

            else if (!matherr(&exc)) {

               errno = EDOM;

            }

	    if (exc.err != 0)

	       errno = exc.err;

            return exc.retval;

	} else

	    return z;

#endif

}