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Commit | Line | Data |
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650425ce UD |
1 | /* |
2 | * wrapper exp2(x) | |
3 | */ | |
4 | ||
9d13fb24 | 5 | #include <math.h> |
9277c064 | 6 | #include <math_private.h> |
650425ce | 7 | |
650425ce | 8 | double |
0ac5ae23 | 9 | __exp2 (double x) |
650425ce | 10 | { |
0cb7efc5 | 11 | double z = __ieee754_exp2 (x); |
d81f90cc WD |
12 | if (__builtin_expect (!isfinite (z) || z == 0, 0) |
13 | && isfinite (x) && _LIB_VERSION != _IEEE_) | |
0ac5ae23 | 14 | /* exp2 overflow: 44, exp2 underflow: 45 */ |
d81f90cc | 15 | return __kernel_standard (x, x, 44 + !!signbit (x)); |
0ac5ae23 | 16 | |
0cb7efc5 | 17 | return z; |
650425ce UD |
18 | } |
19 | weak_alias (__exp2, exp2) | |
20 | #ifdef NO_LONG_DOUBLE | |
becf77cd RM |
21 | strong_alias (__exp2, __exp2l) |
22 | weak_alias (__exp2, exp2l) | |
650425ce | 23 | #endif |