fusl/src/math/__fpclassify.c - Issue 1573973002: Add a "fork" of musl as //fusl.

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Side by Side Diff: fusl/src/math/__fpclassify.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 <math.h>

	2 #include <stdint.h>

	3

	4 int __fpclassify(double x)

	5 {

	6 union {double f; uint64_t i;} u = {x};

	7 int e = u.i>>52 & 0x7ff;

	8 if (!e) return u.i<<1 ? FP_SUBNORMAL : FP_ZERO;

	9 if (e==0x7ff) return u.i<<12 ? FP_NAN : FP_INFINITE;

	10 return FP_NORMAL;

	11 }

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