sin - Man Page
sine function
Library
Math library (libm, -lm)
Synopsis
#include <math.h> double sin(double x); float sinf(float x); long double sinl(long double x);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
sinf(), sinl():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || /* Since glibc 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
Description
These functions return the sine of x, where x is given in radians.
Return Value
On success, these functions return the sine 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.
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
errno is set to EDOM (but see Bugs). An invalid floating-point exception (FE_INVALID) is raised.
Attributes
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
---|---|---|
sin(), sinf(), sinl() | Thread safety | MT-Safe |
Standards
C11, POSIX.1-2008.
History
C99, POSIX.1-2001.
The variant returning double also conforms to SVr4, 4.3BSD, C89.
Bugs
Before glibc 2.10, the glibc implementation did not set errno to EDOM when a domain error occurred.
See Also
acos(3), asin(3), atan(3), atan2(3), cos(3), csin(3), sincos(3), tan(3)
Referenced By
acos(3), asin(3), atan(3), atan2(3), cos(3), sincos(3), tan(3).
The man pages sinf(3) and sinl(3) are aliases of sin(3).