2 Copyright 1988-2022 Free Software Foundation, Inc.
3 This is part of the GCC manual.
4 For copying conditions, see the copyright.rst file.
12 .. index:: trigonometric function, sine, inverse, degrees
14 .. index:: sine, inverse, degrees
16 ASIND --- Arcsine function, degrees
17 ***********************************
19 .. function:: ASIND(X)
21 ``ASIND(X)`` computes the arcsine of its :samp:`{X}` in degrees (inverse of
25 The type shall be either ``REAL`` and a magnitude that is
26 less than or equal to one - or be ``COMPLEX``.
29 The return value is of the same type and kind as :samp:`{X}`.
30 The real part of the result is in degrees and lies in the range
31 -90 \leq \Re \asin(x) \leq 90.
34 GNU extension, enabled with :option:`-fdec-math`.
40 .. code-block:: fortran
45 .. code-block:: fortran
48 real(8) :: x = 0.866_8
50 end program test_asind