From 8a0efa53e44919bcf5ccb1d3353618a82afdf8bc Mon Sep 17 00:00:00 2001 From: Christopher Faylor Date: Thu, 17 Feb 2000 19:39:52 +0000 Subject: import newlib-2000-02-17 snapshot --- newlib/libm/math/wrf_gamma.c | 74 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 newlib/libm/math/wrf_gamma.c (limited to 'newlib/libm/math/wrf_gamma.c') diff --git a/newlib/libm/math/wrf_gamma.c b/newlib/libm/math/wrf_gamma.c new file mode 100644 index 000000000..ae285f564 --- /dev/null +++ b/newlib/libm/math/wrf_gamma.c @@ -0,0 +1,74 @@ +/* wrf_gamma.c -- float version of wr_gamma.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. + * ==================================================== + */ + +/* + * wrapper float gammaf_r(float x, int *signgamp) + */ + +#include "fdlibm.h" +#include + +#ifdef __STDC__ + float gammaf_r(float x, int *signgamp) /* wrapper lgammaf_r */ +#else + float gammaf_r(x,signgamp) /* wrapper lgammaf_r */ + float x; int *signgamp; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_gammaf_r(x,signgamp); +#else + float y; + struct exception exc; + y = __ieee754_gammaf_r(x,signgamp); + if(_LIB_VERSION == _IEEE_) return y; + if(!finitef(y)&&finitef(x)) { +#ifndef HUGE_VAL +#define HUGE_VAL inf + double inf = 0.0; + + SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */ +#endif + exc.name = "gammaf"; + exc.err = 0; + exc.arg1 = exc.arg2 = (double)x; + if (_LIB_VERSION == _SVID_) + exc.retval = HUGE; + else + exc.retval = HUGE_VAL; + if(floorf(x)==x&&x<=(float)0.0) { + /* gammaf(-integer) or gamma(0) */ + exc.type = SING; + if (_LIB_VERSION == _POSIX_) + errno = EDOM; + else if (!matherr(&exc)) { + errno = EDOM; + } + } else { + /* gammaf(finite) overflow */ + exc.type = OVERFLOW; + if (_LIB_VERSION == _POSIX_) + errno = ERANGE; + else if (!matherr(&exc)) { + errno = ERANGE; + } + } + if (exc.err != 0) + errno = exc.err; + return (float)exc.retval; + } else + return y; +#endif +} -- cgit v1.2.3