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math: fix failing test on FreeBSD with gcc 12.2.0 (and -ffast-math) (#19278)

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Delyan Angelov 2023-09-06 07:30:46 +03:00 • committed by GitHub
parent 639f128c1b
commit 3e93a13ed8
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5 changed files with 68 additions and 21 deletions
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6
vlib/math/sin.v
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@ -138,11 +138,17 @@ pub fn sinf(a f32) f32 {
// sincos calculates the sine and cosine of the angle in radians
pub fn sincos(x f64) (f64, f64) {
if is_nan(x) {
return x, x
}
p1 := 7.85398125648498535156e-1
p2 := 3.77489470793079817668e-8
p3 := 2.69515142907905952645e-15
sgn_x := if x < 0 { -1 } else { 1 }
abs_x := abs(x)
if is_inf(x, sgn_x) {
return nan(), nan()
}
if abs_x < internal.root4_f64_epsilon {
x2 := x * x
return x * (1.0 - x2 / 6.0), 1.0 - 0.5 * x2