Function special_fun::unsafe_cephes_double::cosm1
source · pub unsafe extern "C" fn cosm1(x: f64) -> f64
Expand description
Compute accurately cos(x) - 1 for x close to 0.
pub unsafe extern "C" fn cosm1(x: f64) -> f64
Compute accurately cos(x) - 1 for x close to 0.