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| author | Andrew Kelley <superjoe30@gmail.com> | 2018-07-02 16:03:25 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-07-02 16:03:25 -0400 |
| commit | bd282d6cca226c0b02af193f9c3cf0da5f6ea46d (patch) | |
| tree | 5286470c43ef6c7f6530bf8518b0356e44a6ca3a /std/math/isnormal.zig | |
| parent | 22b7312460c89f8fc9dad9674776d4ca3b40acd7 (diff) | |
| parent | 30cfc0ab2c56ad73dca9b9935731d10010c93b32 (diff) | |
| download | zig-bd282d6cca226c0b02af193f9c3cf0da5f6ea46d.tar.gz zig-bd282d6cca226c0b02af193f9c3cf0da5f6ea46d.zip | |
Merge pull request #1176 from bnoordhuis/f16-std
improve std.math f16 support
Diffstat (limited to 'std/math/isnormal.zig')
| -rw-r--r-- | std/math/isnormal.zig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/std/math/isnormal.zig b/std/math/isnormal.zig index d5c1061cb1..22109936c4 100644 --- a/std/math/isnormal.zig +++ b/std/math/isnormal.zig @@ -5,6 +5,10 @@ const assert = std.debug.assert; pub fn isNormal(x: var) bool { const T = @typeOf(x); switch (T) { + f16 => { + const bits = @bitCast(u16, x); + return (bits + 1024) & 0x7FFF >= 2048; + }, f32 => { const bits = @bitCast(u32, x); return (bits + 0x00800000) & 0x7FFFFFFF >= 0x01000000; @@ -20,8 +24,13 @@ pub fn isNormal(x: var) bool { } test "math.isNormal" { + assert(!isNormal(math.nan(f16))); assert(!isNormal(math.nan(f32))); assert(!isNormal(math.nan(f64))); + assert(!isNormal(f16(0))); + assert(!isNormal(f32(0))); + assert(!isNormal(f64(0))); + assert(isNormal(f16(1.0))); assert(isNormal(f32(1.0))); assert(isNormal(f64(1.0))); } |