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// // A rust binding for the GSL library by Guillaume Gomez (guillaume1.gomez@gmail.com) // pub trait Pow { /// This routine computes the power x^n for integer n. The power is computed efficiently—for example, x^8 is computed as ((x^2)^2)^2, requiring only 3 multiplications. /// A version of this function which also computes the numerical error in the result is available as gsl_sf_pow_int_e. fn pow_int(&self, n: i32) -> Self; /// This routine computes the power x^n for integer n. The power is computed efficiently—for example, x^8 is computed as ((x^2)^2)^2, requiring only 3 multiplications. /// A version of this function which also computes the numerical error in the result is available as gsl_sf_pow_int_e. fn pow_uint(&self, n: u32) -> Self; /// This function can be used to compute small integer powers x^2, x^3, etc. efficiently. fn pow2(&self) -> Self; /// This function can be used to compute small integer powers x^2, x^3, etc. efficiently. fn pow3(&self) -> Self; /// This function can be used to compute small integer powers x^2, x^3, etc. efficiently. fn pow4(&self) -> Self; /// This function can be used to compute small integer powers x^2, x^3, etc. efficiently. fn pow5(&self) -> Self; /// This function can be used to compute small integer powers x^2, x^3, etc. efficiently. fn pow6(&self) -> Self; /// This function can be used to compute small integer powers x^2, x^3, etc. efficiently. fn pow7(&self) -> Self; /// This function can be used to compute small integer powers x^2, x^3, etc. efficiently. fn pow8(&self) -> Self; /// This function can be used to compute small integer powers x^2, x^3, etc. efficiently. fn pow9(&self) -> Self; } impl Pow for f64 { fn pow_int(&self, n: i32) -> f64 { unsafe { ::ffi::gsl_pow_int(*self, n) } } fn pow_uint(&self, n: u32) -> f64 { unsafe { ::ffi::gsl_pow_uint(*self, n) } } fn pow2(&self) -> f64 { unsafe { ::ffi::gsl_pow_2(*self) } } fn pow3(&self) -> f64 { unsafe { ::ffi::gsl_pow_3(*self) } } fn pow4(&self) -> f64 { unsafe { ::ffi::gsl_pow_4(*self) } } fn pow5(&self) -> f64 { unsafe { ::ffi::gsl_pow_5(*self) } } fn pow6(&self) -> f64 { unsafe { ::ffi::gsl_pow_6(*self) } } fn pow7(&self) -> f64 { unsafe { ::ffi::gsl_pow_7(*self) } } fn pow8(&self) -> f64 { unsafe { ::ffi::gsl_pow_8(*self) } } fn pow9(&self) -> f64 { unsafe { ::ffi::gsl_pow_9(*self) } } }