const S3_PIO2: f64 = 3. * FRAC_PI_2; /* 0x4012D97C, 0x7F3321D2 */
const S4_PIO2: f64 = 4. * FRAC_PI_2; /* 0x401921FB, 0x54442D18 */
-#[inline]
#[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
pub fn sinf(x: f32) -> f32 {
let x64 = x as f64;