Use __builtin_fma more in dbl-64 code.
[glibc.git] / math / w_lgammaf_main.c
blobba7ff0e573944e578f0316292ab9678d6cd5f26a
1 /* w_lgammaf.c -- float version of w_lgamma.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 */
5 /*
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
12 * is preserved.
13 * ====================================================
16 #include <math.h>
17 #include <math_private.h>
19 #include <lgamma-compat.h>
21 #if BUILD_LGAMMA
22 float
23 LGFUNC (__lgammaf) (float x)
25 float y = CALL_LGAMMA (float, __ieee754_lgammaf_r, x);
26 if(__builtin_expect(!isfinite(y), 0)
27 && isfinite(x) && _LIB_VERSION != _IEEE_)
28 return __kernel_standard_f(x, x,
29 __floorf(x)==x&&x<=0.0f
30 ? 115 /* lgamma pole */
31 : 114); /* lgamma overflow */
33 return y;
35 # if USE_AS_COMPAT
36 compat_symbol (libm, __lgammaf_compat, lgammaf, LGAMMA_OLD_VER);
37 # else
38 versioned_symbol (libm, __lgammaf, lgammaf, LGAMMA_NEW_VER);
39 # endif
40 # if GAMMA_ALIAS
41 strong_alias (LGFUNC (__lgammaf), __gammaf)
42 weak_alias (__gammaf, gammaf)
43 # endif
44 #endif