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authorHuon Wilson <dbau.pp+github@gmail.com>2014-02-21 23:56:09 +1100
committerHuon Wilson <dbau.pp+github@gmail.com>2014-02-24 01:15:39 +1100
commit9e8d5aa29e40066b9c247ef252b58c2092ecdfae (patch)
treec60800bafd66f03ddaf6a70370e23158e40fc7ac /src/libstd/num
parent4cc723dc22e5ebcbac4dc431a82ea75bc9ae6017 (diff)
downloadrust-9e8d5aa29e40066b9c247ef252b58c2092ecdfae.tar.gz
rust-9e8d5aa29e40066b9c247ef252b58c2092ecdfae.zip
arena,std,serialize: remove some unnecessary transmutes.
`as`-able transmutes, duplication and manual slice decomposition are
silly.
Diffstat (limited to 'src/libstd/num')
-rw-r--r--src/libstd/num/f32.rs6
-rw-r--r--src/libstd/num/f64.rs6
2 files changed, 4 insertions, 8 deletions
diff --git a/src/libstd/num/f32.rs b/src/libstd/num/f32.rs
index 7b1fe949199..8fdb42afd5e 100644
--- a/src/libstd/num/f32.rs
+++ b/src/libstd/num/f32.rs
@@ -351,10 +351,8 @@ impl Float for f32 {
         static EXP_MASK: u32 = 0x7f800000;
         static MAN_MASK: u32 = 0x007fffff;
 
-        match (
-            unsafe { ::cast::transmute::<f32,u32>(*self) } & MAN_MASK,
-            unsafe { ::cast::transmute::<f32,u32>(*self) } & EXP_MASK,
-        ) {
+        let bits: u32 = unsafe {::cast::transmute(*self)};
+        match (bits & MAN_MASK, bits & EXP_MASK) {
             (0, 0)        => FPZero,
             (_, 0)        => FPSubnormal,
             (0, EXP_MASK) => FPInfinite,
diff --git a/src/libstd/num/f64.rs b/src/libstd/num/f64.rs
index d5a571cdd23..7f6f02492ab 100644
--- a/src/libstd/num/f64.rs
+++ b/src/libstd/num/f64.rs
@@ -353,10 +353,8 @@ impl Float for f64 {
         static EXP_MASK: u64 = 0x7ff0000000000000;
         static MAN_MASK: u64 = 0x000fffffffffffff;
 
-        match (
-            unsafe { ::cast::transmute::<f64,u64>(*self) } & MAN_MASK,
-            unsafe { ::cast::transmute::<f64,u64>(*self) } & EXP_MASK,
-        ) {
+        let bits: u64 = unsafe {::cast::transmute(*self)};
+        match (bits & MAN_MASK, bits & EXP_MASK) {
             (0, 0)        => FPZero,
             (_, 0)        => FPSubnormal,
             (0, EXP_MASK) => FPInfinite,