diff options
Diffstat (limited to 'vendor/compiler_builtins/libm/src/math/fma.rs')
| -rw-r--r-- | vendor/compiler_builtins/libm/src/math/fma.rs | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/vendor/compiler_builtins/libm/src/math/fma.rs b/vendor/compiler_builtins/libm/src/math/fma.rs index f9a86dc60..940ee2db9 100644 --- a/vendor/compiler_builtins/libm/src/math/fma.rs +++ b/vendor/compiler_builtins/libm/src/math/fma.rs @@ -29,21 +29,10 @@ fn normalize(x: f64) -> Num { Num { m: ix, e, sign } } +#[inline] fn mul(x: u64, y: u64) -> (u64, u64) { - let t1: u64; - let t2: u64; - let t3: u64; - let xlo: u64 = x as u32 as u64; - let xhi: u64 = x >> 32; - let ylo: u64 = y as u32 as u64; - let yhi: u64 = y >> 32; - - t1 = xlo * ylo; - t2 = xlo * yhi + xhi * ylo; - t3 = xhi * yhi; - let lo = t1.wrapping_add(t2 << 32); - let hi = t3 + (t2 >> 32) + (t1 > lo) as u64; - (hi, lo) + let t = (x as u128).wrapping_mul(y as u128); + ((t >> 64) as u64, t as u64) } /// Floating multiply add (f64) |