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LibM: Define some floating point classification macros

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This adds a few macros used to determine the category of a floating
point number. This fixes a build error with the jq port due to the
previously missing isnormal() macro.

Co-authored-by: Lua MacDougall <luawhat@gmail.com>
This commit is contained in:
ry755 2020-11-16 21:27:13 -08:00 committed by Andreas Kling
parent 7ef8835e5a
commit b1fb8e3741
Notes: sideshowbarker 2024-07-19 01:21:34 +09:00 
Author: https://github.com/ry755 🔰
Commit: https://github.com/SerenityOS/serenity/commit/b1fb8e3741e
Pull-request: https://github.com/SerenityOS/serenity/pull/4108
1 changed files with 13 additions and 0 deletions
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13
Libraries/LibM/math.h
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@ -50,6 +50,19 @@ __BEGIN_DECLS
#define M_SQRT2 1.4142135623730951
#define M_SQRT1_2 0.7071067811865475
#define FP_NAN 0
#define FP_INFINITE 1
#define FP_ZERO 2
#define FP_SUBNORMAL 3
#define FP_NORMAL 4
#define fpclassify(x) __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_ZERO, FP_SUBNORMAL, FP_ZERO, x)
#define signbit(x) __builtin_signbit(x)
#define isnan(x) __builtin_isnan(x)
#define isinf(x) __builtin_isinf_sign(x)
#define isfinite(x) __builtin_isfinite(x)
#define isnormal(x) __builtin_isnormal(x)
#define DOUBLE_MAX ((double)0b0111111111101111111111111111111111111111111111111111111111111111)
#define DOUBLE_MIN ((double)0b0000000000010000000000000000000000000000000000000000000000000000)