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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libm/] [mathfp/] [sf_tgamma.c] - Rev 179
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/* w_gammaf.c -- float version of w_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. * ==================================================== */ #include <math.h> #include <errno.h> #ifdef __STDC__ float tgammaf(float x) #else float tgammaf(x) float x; #endif { float y; int local_signgam; y = gammaf_r(x,&local_signgam); if (local_signgam < 0) y = -y; #ifdef _IEEE_LIBM return y; #else if(_LIB_VERSION == _IEEE_) return y; if(!finitef(y)&&finitef(x)) { if(floorf(x)==x&&x<=(float)0.0) { /* tgammaf pole */ errno = EDOM; return HUGE_VAL; } else { /* tgammaf overflow */ errno = ERANGE; return HUGE_VAL; } } return y; #endif }
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