tanf(),
tanl():
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or
cc -std=c99
DESCRIPTION
The
tan()
function returns the tangent of x, where x is
given in radians.
RETURN VALUE
On success, these functions return the tangent of
x.
If
x
is a NaN, a NaN is returned.
If
x
is positive infinity or negative infinity,
a domain error occurs,
and a NaN is returned.
If the correct result would overflow,
a range error occurs,
and the functions return
HUGE_VAL,
HUGE_VALF,
or
HUGE_VALL,
respectively, with the mathematically correct sign.
ERRORS
See
math_error(7)
for information on how to determine whether an error has occurred
when calling these functions.
The following errors can occur:
Domain error: x is an infinity
An invalid floating-point exception
(FE_INVALID)
is raised.
Range error: result overflow
An overflow floating-point exception
(FE_OVERFLOW)
is raised.
These functions do not set
errno.
CONFORMING TO
C99, POSIX.1-2001.
The variant returning
double
also conforms to
SVr4, 4.3BSD, C89.
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
