59e8fd6611
Not everything of musl's code is compiled yet (i.e. the .ignored-c files are not) as we need fenv.h first. Our previous math code is also not deleted yet but not compiled anymore.
32 lines
488 B
C
32 lines
488 B
C
#include "libm.h"
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float sinhf(float x)
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{
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union {float f; uint32_t i;} u = {.f = x};
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uint32_t w;
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float t, h, absx;
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h = 0.5;
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if (u.i >> 31)
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h = -h;
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/* |x| */
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u.i &= 0x7fffffff;
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absx = u.f;
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w = u.i;
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/* |x| < log(FLT_MAX) */
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if (w < 0x42b17217) {
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t = expm1f(absx);
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if (w < 0x3f800000) {
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if (w < 0x3f800000 - (12<<23))
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return x;
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return h*(2*t - t*t/(t+1));
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}
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return h*(t + t/(t+1));
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}
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/* |x| > logf(FLT_MAX) or nan */
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t = 2*h*__expo2f(absx);
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return t;
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}
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