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| author | Volker Mische <volker.mische@gmail.com> | 2013-12-02 00:47:19 +0100 |
|---|---|---|
| committer | Volker Mische <volker.mische@gmail.com> | 2013-12-04 16:11:39 +0100 |
| commit | 30a9c6e4904f1d74b5ece97a422a0f1b148f4ba1 (patch) | |
| tree | eca427dc6dbcc44524364231342c283d7d16c431 /src/libstd/num/mod.rs | |
| parent | 91695797c2ff36017edc47af270ca665f2f4d1ef (diff) | |
| download | rust-30a9c6e4904f1d74b5ece97a422a0f1b148f4ba1.tar.gz rust-30a9c6e4904f1d74b5ece97a422a0f1b148f4ba1.zip | |
Decode a float into integers
The `integer_decode()` function decodes a float (f32/f64) into integers containing the mantissa, exponent and sign. It's needed for `rationalize()` implementation of #9838. The code got ported from ABCL [1]. [1] http://abcl.org/trac/browser/trunk/abcl/src/org/armedbear/lisp/FloatFunctions.java?rev=14465#L94
Diffstat (limited to 'src/libstd/num/mod.rs')
| -rw-r--r-- | src/libstd/num/mod.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libstd/num/mod.rs b/src/libstd/num/mod.rs index 456011d5172..79efe5934d5 100644 --- a/src/libstd/num/mod.rs +++ b/src/libstd/num/mod.rs @@ -532,6 +532,8 @@ pub trait Float: Real fn ln_1p(&self) -> Self; fn mul_add(&self, a: Self, b: Self) -> Self; fn next_after(&self, other: Self) -> Self; + + fn integer_decode(&self) -> (u64, i16, i8); } /// Returns the exponential of the number, minus `1`, `exp(n) - 1`, in a way |