diff options
Diffstat (limited to 'man3/asin.3')
| -rw-r--r-- | man3/asin.3 | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/man3/asin.3 b/man3/asin.3 index 0fe40c54a6..e3a0d39ae1 100644 --- a/man3/asin.3 +++ b/man3/asin.3 @@ -44,12 +44,18 @@ asin, asinf, asinl \- arc sine function .sp Link with \-lm. .SH DESCRIPTION -The \fBasin\fP() function calculates the arc sine of \fIx\fP; that is +The +.BR asin () +function calculates the arc sine of \fIx\fP; that is the value whose sine is \fIx\fP. If \fIx\fP falls outside the range -\-1 to 1, \fBasin\fP() fails and \fIerrno\fP is set. +\-1 to 1, +.BR asin () +fails and \fIerrno\fP is set. .SH "RETURN VALUE" -The \fBasin\fP() function returns the arc sine in radians and the +The +.BR asin () +function returns the arc sine in radians and the value is mathematically defined to be between \-PI/2 and PI/2 (inclusive). .SH ERRORS |