From 9835e2ae736235810b4ea1c162ca5e65c547e770 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 04:49:50 +0200 Subject: Merging upstream version 1.71.1+dfsg1. Signed-off-by: Daniel Baumann --- vendor/libm-0.1.4/src/math/roundf.rs | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 vendor/libm-0.1.4/src/math/roundf.rs (limited to 'vendor/libm-0.1.4/src/math/roundf.rs') diff --git a/vendor/libm-0.1.4/src/math/roundf.rs b/vendor/libm-0.1.4/src/math/roundf.rs new file mode 100644 index 000000000..839d9469a --- /dev/null +++ b/vendor/libm-0.1.4/src/math/roundf.rs @@ -0,0 +1,35 @@ +use core::f32; + +const TOINT: f32 = 1.0 / f32::EPSILON; + +#[inline] +#[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)] +pub fn roundf(mut x: f32) -> f32 { + let i = x.to_bits(); + let e: u32 = i >> 23 & 0xff; + let mut y: f32; + + if e >= 0x7f + 23 { + return x; + } + if i >> 31 != 0 { + x = -x; + } + if e < 0x7f - 1 { + force_eval!(x + TOINT); + return 0.0 * x; + } + y = x + TOINT - TOINT - x; + if y > 0.5f32 { + y = y + x - 1.0; + } else if y <= -0.5f32 { + y = y + x + 1.0; + } else { + y = y + x; + } + if i >> 31 != 0 { + -y + } else { + y + } +} -- cgit v1.2.3