rgsl/
elementary.rs

1//
2// A rust binding for the GSL library by Guillaume Gomez (guillaume1.gomez@gmail.com)
3//
4
5pub trait Elementary {
6    /// This function computes the value of __log(1+x)__ in a way that is accurate for small x. It provides an alternative to the BSD math function log1p(x).
7    fn log1p(&self) -> Self;
8    /// This function computes the value of __exp(x)-1__ in a way that is accurate for small x. It provides an alternative to the BSD math function expm1(x).
9    fn expm1(&self) -> Self;
10    /// This function computes the value of __sqrt{x^2 + y^2}__ in a way that avoids overflow. It provides an alternative to the BSD math function hypot(x,y).
11    fn hypot(&self, y: f64) -> Self;
12    /// This function computes the value of __sqrt{x^2 + y^2 + z^2}__ in a way that avoids overflow.
13    fn hypot3(&self, y: f64, z: f64) -> Self;
14    /// This function computes the value of __arccosh(x)__. It provides an alternative to the standard math function acosh(x).
15    fn acosh(&self) -> Self;
16    /// This function computes the value of __arcsinh(x)__. It provides an alternative to the standard math function asinh(x).
17    fn asinh(&self) -> Self;
18    /// This function computes the value of __arctanh(x)__. It provides an alternative to the standard math function atanh(x).
19    fn atanh(&self) -> Self;
20    /// This function computes the value of __x * 2^e__. It provides an alternative to the standard math function ldexp(x,e).
21    fn ldexp(&self, e: i32) -> Self;
22    /// This function splits the number x into its normalized fraction f and exponent e, such that x = f * 2^e and 0.5 <= f < 1. The function returns f and stores the exponent in e.
23    /// If x is zero, both f and e are set to zero. This function provides an alternative to the standard math function frexp(x, e).
24    fn frexp(&self, e: &mut i32) -> Self;
25}
26
27impl Elementary for f64 {
28    #[doc(alias = "gsl_log1p")]
29    fn log1p(&self) -> f64 {
30        unsafe { sys::gsl_log1p(*self) }
31    }
32
33    #[doc(alias = "gsl_expm1")]
34    fn expm1(&self) -> f64 {
35        unsafe { sys::gsl_expm1(*self) }
36    }
37
38    #[doc(alias = "gsl_hypot")]
39    fn hypot(&self, y: f64) -> f64 {
40        unsafe { sys::gsl_hypot(*self, y) }
41    }
42
43    #[doc(alias = "gsl_hypot3")]
44    fn hypot3(&self, y: f64, z: f64) -> f64 {
45        unsafe { sys::gsl_hypot3(*self, y, z) }
46    }
47
48    #[doc(alias = "gsl_acosh")]
49    fn acosh(&self) -> f64 {
50        unsafe { sys::gsl_acosh(*self) }
51    }
52
53    #[doc(alias = "gsl_asinh")]
54    fn asinh(&self) -> f64 {
55        unsafe { sys::gsl_asinh(*self) }
56    }
57
58    #[doc(alias = "gsl_atanh")]
59    fn atanh(&self) -> f64 {
60        unsafe { sys::gsl_atanh(*self) }
61    }
62
63    #[doc(alias = "gsl_ldexp")]
64    fn ldexp(&self, e: i32) -> f64 {
65        unsafe { sys::gsl_ldexp(*self, e) }
66    }
67
68    #[doc(alias = "gsl_frexp")]
69    fn frexp(&self, e: &mut i32) -> f64 {
70        unsafe { sys::gsl_frexp(*self, e) }
71    }
72}
rgsl/elementary.rs

rgsl/
elementary.rs
