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| author | Andrea Orru <andrea@orru.io> | 2018-08-06 01:43:19 -0400 |
|---|---|---|
| committer | Andrea Orru <andrea@orru.io> | 2018-08-06 01:43:19 -0400 |
| commit | d2f5e57b68da0b16e5789ca19045ccbcb4ecfa8d (patch) | |
| tree | e9fa3caec533a0d1e2b434868b2fde1f9240e5c8 /std/math/isinf.zig | |
| parent | 06614b3fa09954464c2e2f32756cacedc178a282 (diff) | |
| parent | 63a23e848a62d5f167f8d5478de9766cb24aa6eb (diff) | |
| download | zig-d2f5e57b68da0b16e5789ca19045ccbcb4ecfa8d.tar.gz zig-d2f5e57b68da0b16e5789ca19045ccbcb4ecfa8d.zip | |
Merge branch 'master' into zen_stdlib
Diffstat (limited to 'std/math/isinf.zig')
| -rw-r--r-- | std/math/isinf.zig | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/std/math/isinf.zig b/std/math/isinf.zig index a976fb73d2..cf68b5769c 100644 --- a/std/math/isinf.zig +++ b/std/math/isinf.zig @@ -5,6 +5,10 @@ const assert = std.debug.assert; pub fn isInf(x: var) bool { const T = @typeOf(x); switch (T) { + f16 => { + const bits = @bitCast(u16, x); + return bits & 0x7FFF == 0x7C00; + }, f32 => { const bits = @bitCast(u32, x); return bits & 0x7FFFFFFF == 0x7F800000; @@ -22,6 +26,9 @@ pub fn isInf(x: var) bool { pub fn isPositiveInf(x: var) bool { const T = @typeOf(x); switch (T) { + f16 => { + return @bitCast(u16, x) == 0x7C00; + }, f32 => { return @bitCast(u32, x) == 0x7F800000; }, @@ -37,6 +44,9 @@ pub fn isPositiveInf(x: var) bool { pub fn isNegativeInf(x: var) bool { const T = @typeOf(x); switch (T) { + f16 => { + return @bitCast(u16, x) == 0xFC00; + }, f32 => { return @bitCast(u32, x) == 0xFF800000; }, @@ -50,10 +60,14 @@ pub fn isNegativeInf(x: var) bool { } test "math.isInf" { + assert(!isInf(f16(0.0))); + assert(!isInf(f16(-0.0))); assert(!isInf(f32(0.0))); assert(!isInf(f32(-0.0))); assert(!isInf(f64(0.0))); assert(!isInf(f64(-0.0))); + assert(isInf(math.inf(f16))); + assert(isInf(-math.inf(f16))); assert(isInf(math.inf(f32))); assert(isInf(-math.inf(f32))); assert(isInf(math.inf(f64))); @@ -61,10 +75,14 @@ test "math.isInf" { } test "math.isPositiveInf" { + assert(!isPositiveInf(f16(0.0))); + assert(!isPositiveInf(f16(-0.0))); assert(!isPositiveInf(f32(0.0))); assert(!isPositiveInf(f32(-0.0))); assert(!isPositiveInf(f64(0.0))); assert(!isPositiveInf(f64(-0.0))); + assert(isPositiveInf(math.inf(f16))); + assert(!isPositiveInf(-math.inf(f16))); assert(isPositiveInf(math.inf(f32))); assert(!isPositiveInf(-math.inf(f32))); assert(isPositiveInf(math.inf(f64))); @@ -72,10 +90,14 @@ test "math.isPositiveInf" { } test "math.isNegativeInf" { + assert(!isNegativeInf(f16(0.0))); + assert(!isNegativeInf(f16(-0.0))); assert(!isNegativeInf(f32(0.0))); assert(!isNegativeInf(f32(-0.0))); assert(!isNegativeInf(f64(0.0))); assert(!isNegativeInf(f64(-0.0))); + assert(!isNegativeInf(math.inf(f16))); + assert(isNegativeInf(-math.inf(f16))); assert(!isNegativeInf(math.inf(f32))); assert(isNegativeInf(-math.inf(f32))); assert(!isNegativeInf(math.inf(f64))); |