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extern "C" {
pub fn acos(n: f64) -> f64;
pub fn acosf(n: f32) -> f32;
pub fn asin(n: f64) -> f64;
pub fn asinf(n: f32) -> f32;
pub fn atan(n: f64) -> f64;
pub fn atan2(a: f64, b: f64) -> f64;
pub fn atan2f(a: f32, b: f32) -> f32;
pub fn atanf(n: f32) -> f32;
pub fn cbrt(n: f64) -> f64;
pub fn cbrtf(n: f32) -> f32;
pub fn cosh(n: f64) -> f64;
pub fn coshf(n: f32) -> f32;
pub fn expm1(n: f64) -> f64;
pub fn expm1f(n: f32) -> f32;
pub fn fdim(a: f64, b: f64) -> f64;
pub fn fdimf(a: f32, b: f32) -> f32;
pub fn hypot(x: f64, y: f64) -> f64;
pub fn hypotf(x: f32, y: f32) -> f32;
pub fn log1p(n: f64) -> f64;
pub fn log1pf(n: f32) -> f32;
pub fn sinh(n: f64) -> f64;
pub fn sinhf(n: f32) -> f32;
pub fn tan(n: f64) -> f64;
pub fn tanf(n: f32) -> f32;
pub fn tanh(n: f64) -> f64;
pub fn tanhf(n: f32) -> f32;
}