| /* | |
| * Written by J.T. Conklin <jtc@netbsd.org>. | |
| * Public domain. | |
| */ | |
| /* | |
| * isinff(x) returns 1 if x is inf, -1 if x is -inf, else 0; | |
| * no branching! | |
| */ | |
| #include "math.h" | |
| #include "math_private.h" | |
| int __isinff (float x) | |
| { | |
| int32_t ix,t; | |
| GET_FLOAT_WORD(ix,x); | |
| t = ix & 0x7fffffff; | |
| t ^= 0x7f800000; | |
| t |= -t; | |
| return ~(t >> 31) & (ix >> 30); | |
| } | |
| libm_hidden_def(__isinff) |