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lib/libm/math: Add implementation of __signbitf, if needed by a port.

This commit is contained in:
Damien George 2018-09-27 15:21:04 +10:00
parent 4c08932e73
commit 8960a28238
1 changed files with 5 additions and 0 deletions
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5
lib/libm/math.c
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@ -36,6 +36,11 @@ typedef union {
}; };
} float_s_t; } float_s_t;
int __signbitf(float f) {
float_s_t u = {.f = f};
return u.s;
}
#ifndef NDEBUG #ifndef NDEBUG
float copysignf(float x, float y) { float copysignf(float x, float y) {
float_s_t fx={.f = x}; float_s_t fx={.f = x};