.TH asin() "" "" "Mathematics Function (libm)"
.PC "Calculate inverse sine"
.B "#include <math.h>"
\fBdouble asin(\fIarg\^\fB) double \fIarg\^\fB;\fR
.PP
.B asin()
calculates the inverse sine of
.IR arg ,
which must be in the range [\-1., 1.].
The result will be in the range [\-\(*p\fR/2, \(*p\fR/2].
.PP
If all goes well,
.B asin()
returns the inverse sine.
However, if
.I arg
is out of range,
.B asin()
sets
.B errno
to
.B EDOM
and returns zero.
.SH Example
For an example of this function, see the entry for
.BR tan() .
.SH "See Also"
.Xr libm, libm
.Xr sin() sin
.br
\*(AS, \(sc7.5.2.2
.br
\*(PX Standard, \(sc8.1
