MirOS Manual: acosh(3), acoshf(3)

ACOSH(3)                   BSD Programmer's Manual                    ACOSH(3)

NAME

     acosh, acoshf - inverse hyperbolic cosine function

LIBRARY

     libm

SYNOPSIS

     #include <math.h>

     double
     acosh(double x);

     float
     acoshf(float x);

DESCRIPTION

     The acosh() and acoshf() functions compute the inverse hyperbolic cosine
     of the real argument x.

RETURN VALUES

     If x is less than one, acosh(x) and acoshf(x) return NaN and set the glo-
     bal variable errno to EDOM.

SEE ALSO

     asinh(3), atanh(3), exp(3), math(3)

HISTORY

     The acosh() function appeared in 4.3BSD.

MirOS BSD #10-current            May 6, 1991                                 1

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