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664f00763b
* libm/math/ef_scalb.c: Replace isnanf() (pre-C99 function call) with
isnan() (C99 macro).
* libm/math/wf_log.c: Ditto.
* libm/math/wf_j0.c: Ditto.
* libm/math/wf_sqrt.c: Ditto.
* libm/math/wf_pow.c: Ditto.
* libm/math/wf_fmod.c: Ditto.
* libm/math/wf_remainder.c: Ditto.
* libm/math/wf_scalb.c: Ditto.
* libm/math/wf_atanh.c: Ditto.
* libm/math/wf_cosh.c: Ditto.
* libm/math/wf_acos.c: Ditto.
* libm/math/wf_acosh.c: Ditto.
* libm/math/wf_jn.c: Ditto.
* libm/math/wf_log10.c: Ditto.
* libm/math/wf_asin.c: Ditto.
* libm/math/wf_j1.c: Ditto.
* libm/common/sf_isnan.c: Add #include <ieeefp.h>, fix comment.
* libm/common/sf_isinf.c: Add #include <ieeefp.h>, adjust comment to
match that from s_isinf.c.
* libc/include/machine/ieeefp.h: Simplify isinf and isnan macros to
remove un-necessary extension use (in a similar manner to as was
recently done in math.h).
* libc/include/math.h: Remove isnanf and isinff prototypes (are in
ieeefp.h).
* libm/machine/spu/sf_isinf.c: Fix comment (remove <math.h>).
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/* ef_scalb.c -- float version of e_scalb.c.
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* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
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*/
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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#include "fdlibm.h"
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#include <limits.h>
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#ifdef _SCALB_INT
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#ifdef __STDC__
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float __ieee754_scalbf(float x, int fn)
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#else
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float __ieee754_scalbf(x,fn)
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float x; int fn;
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#endif
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#else
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#ifdef __STDC__
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float __ieee754_scalbf(float x, float fn)
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#else
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float __ieee754_scalbf(x,fn)
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float x, fn;
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#endif
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#endif
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{
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#ifdef _SCALB_INT
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return scalbnf(x,fn);
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#else
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if (isnan(x)||isnan(fn)) return x*fn;
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if (!finitef(fn)) {
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if(fn>(float)0.0) return x*fn;
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else return x/(-fn);
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}
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if (rintf(fn)!=fn) return (fn-fn)/(fn-fn);
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#if INT_MAX > 65000
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if ( fn > (float)65000.0) return scalbnf(x, 65000);
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if (-fn > (float)65000.0) return scalbnf(x,-65000);
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#else
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if ( fn > (float)32000.0) return scalbnf(x, 32000);
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if (-fn > (float)32000.0) return scalbnf(x,-32000);
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#endif
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return scalbnf(x,(int)fn);
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#endif
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}
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