From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- vendor/compiler_builtins/libm/src/math/modf.rs | 34 ++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 vendor/compiler_builtins/libm/src/math/modf.rs (limited to 'vendor/compiler_builtins/libm/src/math/modf.rs') diff --git a/vendor/compiler_builtins/libm/src/math/modf.rs b/vendor/compiler_builtins/libm/src/math/modf.rs new file mode 100644 index 000000000..bcab33a81 --- /dev/null +++ b/vendor/compiler_builtins/libm/src/math/modf.rs @@ -0,0 +1,34 @@ +pub fn modf(x: f64) -> (f64, f64) { + let rv2: f64; + let mut u = x.to_bits(); + let mask: u64; + let e = ((u >> 52 & 0x7ff) as i32) - 0x3ff; + + /* no fractional part */ + if e >= 52 { + rv2 = x; + if e == 0x400 && (u << 12) != 0 { + /* nan */ + return (x, rv2); + } + u &= 1 << 63; + return (f64::from_bits(u), rv2); + } + + /* no integral part*/ + if e < 0 { + u &= 1 << 63; + rv2 = f64::from_bits(u); + return (x, rv2); + } + + mask = ((!0) >> 12) >> e; + if (u & mask) == 0 { + rv2 = x; + u &= 1 << 63; + return (f64::from_bits(u), rv2); + } + u &= !mask; + rv2 = f64::from_bits(u); + return (x - rv2, rv2); +} -- cgit v1.2.3