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Synopsis:
    #include <math.h>
    double asinh( double x );

Description:
    The asinh function computes the inverse hyperbolic sine of x.

Returns:
    The asinh function returns the inverse hyperbolic sine value.

Example:
    #include <stdio.h>
    #include <math.h>

    void main()
      {
        printf( "%f\n", asinh( 0.5 ) );
      }

    produces the following:

    0.481212

Classification:
    WATCOM

Systems:
    Math

See Also:
    acosh, atanh, sinh, matherr