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+
+/* @(#)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
+<<remainder>>, <<remainderf>>---round and remainder
+INDEX
+ remainder
+INDEX
+ remainderf
+
+ANSI_SYNOPSIS
+ #include <math.h>
+ double remainder(double <[x]>, double <[y]>);
+ float remainderf(float <[x]>, float <[y]>);
+
+TRAD_SYNOPSIS
+ #include <math.h>
+ double remainder(<[x]>,<[y]>)
+ double <[x]>, <[y]>;
+ float remainderf(<[x]>,<[y]>)
+ float <[x]>, <[y]>;
+
+DESCRIPTION
+<<remainder>> and <<remainderf>> find the remainder of
+<[x]>/<[y]>; this value is in the range -<[y]>/2 .. +<[y]>/2.
+
+RETURNS
+<<remainder>> returns the integer result as a double.
+
+PORTABILITY
+<<remainder>> is a System V release 4.
+<<remainderf>> is an extension.
+
+*/
+
+/*
+ * wrapper remainder(x,p)
+ */
+
+#include "fdlibm.h"
+#include <errno.h>
+
+#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) */
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+