From f95a4a932476be2ba99e2fd081e8d2bc6ea12813 Mon Sep 17 00:00:00 2001 From: PikalaxALT Date: Fri, 15 Dec 2017 09:38:53 -0500 Subject: Import newlib and create makefile --- newlib/libm/mathfp/ef_scalb.c | 53 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 newlib/libm/mathfp/ef_scalb.c (limited to 'newlib/libm/mathfp/ef_scalb.c') diff --git a/newlib/libm/mathfp/ef_scalb.c b/newlib/libm/mathfp/ef_scalb.c new file mode 100644 index 0000000..901f177 --- /dev/null +++ b/newlib/libm/mathfp/ef_scalb.c @@ -0,0 +1,53 @@ +/* ef_scalb.c -- float version of e_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. + * ==================================================== + */ + +#include "fdlibm.h" +#include + +#ifdef _SCALB_INT +#ifdef __STDC__ + float scalbf(float x, int fn) +#else + float scalbf(x,fn) + float x; int fn; +#endif +#else +#ifdef __STDC__ + float scalbf(float x, float fn) +#else + float scalbf(x,fn) + float x, fn; +#endif +#endif +{ +#ifdef _SCALB_INT + return scalbnf(x,fn); +#else + if (isnanf(x)||isnanf(fn)) return x*fn; + if (!finitef(fn)) { + if(fn>(float)0.0) return x*fn; + else return x/(-fn); + } + if (rintf(fn)!=fn) return (fn-fn)/(fn-fn); +#if INT_MAX > 65000 + if ( fn > (float)65000.0) return scalbnf(x, 65000); + if (-fn > (float)65000.0) return scalbnf(x,-65000); +#else + if ( fn > (float)32000.0) return scalbnf(x, 32000); + if (-fn > (float)32000.0) return scalbnf(x,-32000); +#endif + return scalbnf(x,(int)fn); +#endif +} -- cgit v1.2.3