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.
36 lines
585 B
C
36 lines
585 B
C
#include <math.h>
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#include <stdint.h>
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float hypotf(float x, float y)
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{
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union {float f; uint32_t i;} ux = {x}, uy = {y}, ut;
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float_t z;
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ux.i &= -1U>>1;
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uy.i &= -1U>>1;
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if (ux.i < uy.i) {
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ut = ux;
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ux = uy;
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uy = ut;
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}
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x = ux.f;
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y = uy.f;
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if (uy.i == 0xff<<23)
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return y;
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if (ux.i >= 0xff<<23 || uy.i == 0 || ux.i - uy.i >= 25<<23)
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return x + y;
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z = 1;
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if (ux.i >= (0x7f+60)<<23) {
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z = 0x1p90f;
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x *= 0x1p-90f;
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y *= 0x1p-90f;
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} else if (uy.i < (0x7f-60)<<23) {
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z = 0x1p-90f;
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x *= 0x1p90f;
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y *= 0x1p90f;
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}
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return z*sqrtf((double)x*x + (double)y*y);
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}
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