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Side by Side Diff: fusl/src/math/truncf.c

Issue 1573973002: Add a "fork" of musl as //fusl. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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1 #include "libm.h"
2
3 float truncf(float x)
4 {
5 union {float f; uint32_t i;} u = {x};
6 int e = (int)(u.i >> 23 & 0xff) - 0x7f + 9;
7 uint32_t m;
8
9 if (e >= 23 + 9)
10 return x;
11 if (e < 9)
12 e = 1;
13 m = -1U >> e;
14 if ((u.i & m) == 0)
15 return x;
16 FORCE_EVAL(x + 0x1p120f);
17 u.i &= ~m;
18 return u.f;
19 }
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