/* @(#)w_remainder.c 5.1 93/09/24 */ /* * ==================================================== * 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 rint INDEX rintf INDEX remainder INDEX remainderf ANSI_SYNOPSIS #include double rint(double <[x]>); float rintf(float <[x]>); double remainder(double <[x]>, double <[y]>); float remainderf(float <[x]>, float <[y]>); TRAD_SYNOPSIS #include double rint(<[x]>) double <[x]>; float rintf(<[x]>) float <[x]>; double remainder(<[x]>,<[y]>) double <[x]>, <[y]>; float remainderf(<[x]>,<[y]>) float <[x]>, <[y]>; DESCRIPTION <> and <> returns their argument rounded to the nearest integer. <> and <> find the remainder of <[x]>/<[y]>; this value is in the range -<[y]>/2 .. +<[y]>/2. RETURNS <> and <> return the integer result as a double. PORTABILITY <> and <> are System V release 4. <> and <> are extensions. */ /* * wrapper remainder(x,p) */ #include "fdlibm.h" #include #ifndef _DOUBLE_IS_32BITS #ifdef __STDC__ 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 } #endif /* defined(_DOUBLE_IS_32BITS) */