New upstream version 1.36.0+dfsg1

[rustc.git] / vendor / compiler_builtins / libm / src / math / acos.rs

diff --git a/vendor/compiler_builtins/libm/src/math/acos.rs b/vendor/compiler_builtins/libm/src/math/acos.rs
index 276e361f3d5c281a7d598dc92e8ab38ecd7c16c3..055888ffa61d5af1663d61b1d2832410f4f8435e 100644 (file)
--- a/vendor/compiler_builtins/libm/src/math/acos.rs
+++ b/vendor/compiler_builtins/libm/src/math/acos.rs
@@ -52,10 +52,11 @@ const QS4: f64 = 7.70381505559019352791e-02; /* 0x3FB3B8C5, 0xB12E9282 */
 fn r(z: f64) -> f64 {
     let p: f64 = z * (PS0 + z * (PS1 + z * (PS2 + z * (PS3 + z * (PS4 + z * PS5)))));
     let q: f64 = 1.0 + z * (QS1 + z * (QS2 + z * (QS3 + z * QS4)));
-    return p / q;
+    p / q
 }
 
 #[inline]
+#[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
 pub fn acos(x: f64) -> f64 {
     let x1p_120f = f64::from_bits(0x3870000000000000); // 0x1p-120 === 2 ^ -120
     let z: f64;
@@ -72,7 +73,7 @@ pub fn acos(x: f64) -> f64 {
     if ix >= 0x3ff00000 {
         let lx: u32 = x.to_bits() as u32;
 
-        if (ix - 0x3ff00000 | lx) == 0 {
+        if ((ix - 0x3ff00000) | lx) == 0 {
             /* acos(1)=0, acos(-1)=pi */
             if (hx >> 31) != 0 {
                 return 2. * PIO2_HI + x1p_120f;
@@ -104,5 +105,5 @@ pub fn acos(x: f64) -> f64 {
 
     c = (z - df * df) / (s + df);
     w = r(z) * s + c;
-    return 2. * (df + w);
+    2. * (df + w)
 }