ASIN (The GNU Fortran Compiler) (original) (raw)
8.19 ASIN — Arcsine function ¶
Synopsis:
RESULT = ASIN(X)
Description:
ASIN(X) computes the arcsine of its X (inverse of SIN(X)).
Class:
Elemental function
Arguments:
| X | The type shall be either REAL and a magnitude that is less than or equal to one - or be COMPLEX. |
|---|
Return value:
The return value is of the same type and kind as X. The real part of the result is in radians and lies in the range_-\pi/2 \leq \Re \asin(x) \leq \pi/2_.
Example:
program test_asin real(8) :: x = 0.866_8 x = asin(x) end program test_asin
Specific names:
| Name | Argument | Return type | Standard |
|---|---|---|---|
| ASIN(X) | REAL(4) X | REAL(4) | Fortran 77 and later |
| DASIN(X) | REAL(8) X | REAL(8) | Fortran 77 and later |
Standard:
Fortran 77 and later, for a complex argument Fortran 2008 or later
See also:
Inverse function:
SIN — Sine function
Degrees function:
ASIND — Arcsine function, degrees