ASIND (The GNU Fortran Compiler)

### 8.21 `ASIND` — Arcsine function, degrees ¶

Synopsis:

  `RESULT = ASIND(X)`

Description:

  `ASIND(X)` computes the arcsine of its X in degrees (inverse of `SIND(X)`).

Class:

  Elemental function

Arguments:

  X | The type shall be either `REAL` and a magnitude that is less than or equal to one.

Return value:

  The return value is of the same type and kind as X. The result is in degrees and lies in the range -90 \leq \Re \asin(x) \leq 90.

Example:

      program test_asind
        real(8) :: x = 0.866_8
        x = asind(x)
      end program test_asind

Specific names:

  Name | Argument | Return type | Standard
  --- | --- | --- | ---
  `ASIND(X)` | `REAL(4) X` | `REAL(4)` | Fortran 2023
  `DASIND(X)` | `REAL(8) X` | `REAL(8)` | GNU extension

Standard:

  Fortran 2023

See also:

  Inverse function:
  `SIND` — Sine function, degrees
  Radians function:
  `ASIN` — Arcsine function