Function gsw::volume::specvol_first_derivatives

pub fn specvol_first_derivatives(
    sa: f64,
    ct: f64,
    p: f64
) -> Result<(f64, f64, f64)>

First order derivatives of specific volume (75-term polynomial approximation)

Arguments

• sa: Absolute Salinity [ g kg-1 ]
• ct: Conservative Temperature (ITS-90) [ deg C ]
• p: sea pressure [ dbar ] (i.e. absolute pressure - 10.1325 dbar)

Example:

use gsw::volume::specvol_first_derivatives;
let (dvdsa, dvdct, dvdp) = specvol_first_derivatives(32.0, 10.0, 100.0).unwrap();
assert!((dvdsa + 7.355503539675526e-07).abs() <= f64::EPSILON);
assert!((dvdct - 1.5715643283187364e-07).abs() <= f64::EPSILON);
assert!((dvdp + 4.3021618664421085e-13).abs() <= f64::EPSILON);