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| author | Andrew Kelley <superjoe30@gmail.com> | 2018-06-19 16:06:10 -0400 |
|---|---|---|
| committer | Andrew Kelley <superjoe30@gmail.com> | 2018-06-19 16:06:10 -0400 |
| commit | c7804277bf390eeba368e3565b2aff0cf96f86b0 (patch) | |
| tree | cdf926acbc28a278ffeeb92552631a724c2da98d /std/math/expm1.zig | |
| parent | 0b92d689d0e64164bb8908c807db9338d59c41ce (diff) | |
| download | zig-c7804277bf390eeba368e3565b2aff0cf96f86b0.tar.gz zig-c7804277bf390eeba368e3565b2aff0cf96f86b0.zip | |
`@floatToInt` now has safety-checked undefined behavior
when the integer part does not fit in the destination integer type
* Also fix incorrect safety triggered for integer casting an
`i32` to a `u7`. closes #1138
* adds compiler-rt function: `__floatuntidf`
Diffstat (limited to 'std/math/expm1.zig')
| -rw-r--r-- | std/math/expm1.zig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/std/math/expm1.zig b/std/math/expm1.zig index 438e44ccce..6fa0194b32 100644 --- a/std/math/expm1.zig +++ b/std/math/expm1.zig @@ -20,6 +20,10 @@ pub fn expm1(x: var) @typeOf(x) { fn expm1_32(x_: f32) f32 { @setFloatMode(this, builtin.FloatMode.Strict); + + if (math.isNan(x_)) + return math.nan(f32); + const o_threshold: f32 = 8.8721679688e+01; const ln2_hi: f32 = 6.9313812256e-01; const ln2_lo: f32 = 9.0580006145e-06; @@ -146,6 +150,10 @@ fn expm1_32(x_: f32) f32 { fn expm1_64(x_: f64) f64 { @setFloatMode(this, builtin.FloatMode.Strict); + + if (math.isNan(x_)) + return math.nan(f64); + const o_threshold: f64 = 7.09782712893383973096e+02; const ln2_hi: f64 = 6.93147180369123816490e-01; const ln2_lo: f64 = 1.90821492927058770002e-10; |