1 /*
2  * wrapper exp2f(x)
3  */
4 
5 #include <math.h>
6 #include <math_private.h>
7 #include <math-svid-compat.h>
8 
9 #if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_27)
10 float
__exp2f_compat(float x)11 __exp2f_compat (float x)
12 {
13   float z = __ieee754_exp2f (x);
14   if (__builtin_expect (!isfinite (z) || z == 0, 0)
15       && isfinite (x) && _LIB_VERSION != _IEEE_)
16     /* exp2 overflow: 144, exp2 underflow: 145 */
17     return __kernel_standard_f (x, x, 144 + !!signbit (x));
18 
19   return z;
20 }
21 compat_symbol (libm, __exp2f_compat, exp2f, GLIBC_2_1);
22 #endif
23