Merging upstream version 1.71.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/vendor/libm-0.1.4/src/math/copysign.rs b/vendor/libm-0.1.4/src/math/copysign.rs
new file mode 100644
index 000000000..1527fb6ea
--- /dev/null
+++ b/vendor/libm-0.1.4/src/math/copysign.rs
@@ -0,0 +1,11 @@
+/// Sign of Y, magnitude of X (f64)
+///
+/// Constructs a number with the magnitude (absolute value) of its
+/// first argument, `x`, and the sign of its second argument, `y`.
+pub fn copysign(x: f64, y: f64) -> f64 {
+    let mut ux = x.to_bits();
+    let uy = y.to_bits();
+    ux &= (!0) >> 1;
+    ux |= uy & (1 << 63);
+    f64::from_bits(ux)
+}