ASINH(3)

NAME
1.6 `asinh', `asinhf'--inverse hyperbolic sine

SYNOPSIS
     #include <math.h>
     double asinh(double X);
     float asinhf(float X);

DESCRIPTION
`asinh' calculates the inverse hyperbolic sine of X. `asinh' is defined as
      sgn(X) * log(abs(X) + sqrt(1+X*X))
   `asinhf' is identical, other than taking and returning floats.

RETURNS
`asinh' and `asinhf' return the calculated value.

PORTABILITY
Neither `asinh' nor `asinhf' are ANSI C.

SEE ALSO
asinh is part of the library. The full documentation for is maintained as a Texinfo manual. If info and are properly installed at your site, the command

    info

will give you access to the complete manual.