The OpenD Programming Language

asinh

Calculates the inverse hyperbolic sine of x.

Mathematically,

asinh(x) =  log( x + sqrt( x*x + 1 )) // if x >= +0
asinh(x) = -log(-x + sqrt( x*x + 1 )) // if x <= -0

Special Values
x	asinh(x)
NaN	NaN
±0	±0
±∞	±∞

real asinh(real x)
double asinh(double x)
@safe pure nothrow @nogc
double
asinh
(
double x
)
float asinh(float x)

Examples

import std.math.traits : isIdentical, isNaN;

assert(isIdentical(asinh(0.0), 0.0));
assert(isIdentical(asinh(-0.0), -0.0));
assert(asinh(real.infinity) == real.infinity);
assert(asinh(-real.infinity) == -real.infinity);
assert(isNaN(asinh(real.nan)));

Meta

Source

See Implementation

std math trigonometry functions