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8.20 ASIND — Arcsine function, degrees ¶

Description:

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

This function is for compatibility only and should be avoided in favor of standard constructs wherever possible.

Standard:

GNU extension, enabled with -fdec-math.

Class:

Elemental function

Syntax:

RESULT = ASIND(X)

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 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)	GNU extension
DASIND(X)	REAL(8) X	REAL(8)	GNU extension

See also:

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