| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * wrapper exp2(x) |
| 3 | */ |
| 4 | |
| 5 | #include <math.h> |
| 6 | #include <math_private.h> |
| 7 | |
| 8 | double |
| 9 | __exp2 (double x) |
| 10 | { |
| 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)); |
| 16 | |
| 17 | return z; |
| 18 | } |
| 19 | weak_alias (__exp2, exp2) |
| 20 | #ifdef NO_LONG_DOUBLE |
| 21 | strong_alias (__exp2, __exp2l) |
| 22 | weak_alias (__exp2, exp2l) |
| 23 | #endif |