Fortran Wiki
atanh (changes)

Showing changes from revision #4 to #5: (追記) Added (追記ここまで) | ~~(削除) Removed (削除ここまで)~~ | ~~(削除) Chan (削除ここまで)~~(追記) ged (追記ここまで)

Description

atanh(x) computes the inverse hyperbolic tangent of x.

Standard

Fortran 2008 and later

Class

Elemental function

Syntax

result = atanh(x)

Arguments

x - The type shall be real or complex.

Return value

The return value has same type and kind as x. If x is complex, the imaginary part of the result is in radians and lies between ~~(削除) -\\pi/2 \\leq \\mathop{Im}{\\atanh(x)} \\leq \\pi/2 (削除ここまで)~~(追記) $-\pi/2 \leq \mathop{Im}{\atanh(x)} \leq \pi/2$ (追記ここまで).

Example

program test_atanh
 real, dimension(3) :: x = (/ -1.0, 0.0, 1.0 /)
 write (*,*) atanh(x)
end program

Fortran Wiki atanh (changes)