From 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Thu, 12 Jul 2007 18:26:36 +0000 Subject: 2.5-18.1 --- math/w_scalbf.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 math/w_scalbf.c (limited to 'math/w_scalbf.c') diff --git a/math/w_scalbf.c b/math/w_scalbf.c new file mode 100644 index 0000000000..60cb5670ed --- /dev/null +++ b/math/w_scalbf.c @@ -0,0 +1,66 @@ +/* w_scalbf.c -- float version of w_scalb.c. + * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. + */ + +/* + * ==================================================== + * 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. + * ==================================================== + */ + +#if defined(LIBM_SCCS) && !defined(lint) +static char rcsid[] = "$NetBSD: w_scalbf.c,v 1.3 1995/05/10 20:49:50 jtc Exp $"; +#endif + +/* + * wrapper scalbf(float x, float fn) is provide for + * passing various standard test suite. One + * should use scalbn() instead. + */ + +#include +#include "math_private.h" + +#include + +#ifdef __STDC__ +#ifdef _SCALB_INT + float __scalbf(float x, int fn) /* wrapper scalbf */ +#else + float __scalbf(float x, float fn) /* wrapper scalbf */ +#endif +#else + float __scalbf(x,fn) /* wrapper scalbf */ +#ifdef _SCALB_INT + float x; int fn; +#else + float x,fn; +#endif +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_scalbf(x,fn); +#else + float z; + z = __ieee754_scalbf(x,fn); + if(_LIB_VERSION != _SVID_) return z; + if(!(__finitef(z)||__isnanf(z))&&__finitef(x)) { + /* scalbf overflow */ + return (float)__kernel_standard((double)x,(double)fn,132); + } + if(z==(float)0.0&&z!=x) { + /* scalbf underflow */ + return (float)__kernel_standard((double)x,(double)fn,133); + } +#ifndef _SCALB_INT + if(!__finitef(fn)) __set_errno (ERANGE); +#endif + return z; +#endif +} +weak_alias (__scalbf, scalbf) -- cgit 1.4.1