9.7. ACOSH

9.7 ACOSH — Inverse hyperbolic cosine function

Description:
ACOSH(X) computes the inverse hyperbolic cosine of X.
Standard:
Fortran 2008 and later
Class:
Elemental function
Syntax:
RESULT = ACOSH(X)
Arguments:
X The type shall be REAL or COMPLEX.
Return value:
The return value has the same type and kind as X. If X is complex, the imaginary part of the result is in radians and lies between 0 \leq \Im \acosh(x) \leq \pi.
Example:
PROGRAM test_acosh
  REAL(8), DIMENSION(3) :: x = (/ 1.0, 2.0, 3.0 /)
  WRITE (*,*) ACOSH(x)
END PROGRAM
Specific names:
Name Argument Return type Standard
DACOSH(X) REAL(8) X REAL(8) GNU extension
See also:
Inverse function: COSH

© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gfortran/ACOSH.html

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