Cleanup sync_file_range implementation
[glibc.git] / math / w_exp2.c
blobca17f9ea630b1f089764fe17a0c6385b776bbf1f
1 /*
2 * wrapper exp2(x)
3 */
5 #include <math.h>
6 #include <math_private.h>
8 double
9 __exp2 (double x)
11 double z = __ieee754_exp2 (x);
12 if (__builtin_expect (!isfinite (z) || z == 0, 0)
13 && isfinite (x) && _LIB_VERSION != _IEEE_)
14 /* exp2 overflow: 44, exp2 underflow: 45 */
15 return __kernel_standard (x, x, 44 + !!signbit (x));
17 return z;
19 weak_alias (__exp2, exp2)
20 #ifdef NO_LONG_DOUBLE
21 strong_alias (__exp2, __exp2l)
22 weak_alias (__exp2, exp2l)
23 #endif