]> git.ipfire.org Git - thirdparty/glibc.git/blame - math/w_exp2l_compat.c
Fix the inaccuracy of j0f/j1f/y0f/y1f [BZ #14469, #14470, #14471, #14472]
[thirdparty/glibc.git] / math / w_exp2l_compat.c
CommitLineData
650425ce
UD
1/*
2 * wrapper exp2l(x)
3 */
4
9d13fb24 5#include <math.h>
9277c064 6#include <math_private.h>
813378e9 7#include <math-svid-compat.h>
92892fdb 8#include <libm-alias-ldouble.h>
650425ce 9
4f3647e4 10#if LIBM_SVID_COMPAT
650425ce 11long double
0ac5ae23 12__exp2l (long double x)
650425ce 13{
0cb7efc5 14 long double z = __ieee754_exp2l (x);
d81f90cc
WD
15 if (__builtin_expect (!isfinite (z) || z == 0, 0)
16 && isfinite (x) && _LIB_VERSION != _IEEE_)
0ac5ae23 17 /* exp2 overflow: 244, exp2 underflow: 245 */
d81f90cc 18 return __kernel_standard_l (x, x, 244 + !!signbit (x));
0ac5ae23 19
0cb7efc5 20 return z;
650425ce 21}
92892fdb 22libm_alias_ldouble (__exp2, exp2)
4f3647e4 23#endif