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).

InterfaceAttributeValue
sin(), sinf(), sinl()Thread safetyMT-Safe

Standards

C99, POSIX.1-2001, POSIX.1-2008.

The variant returning double also conforms to SVr4, 4.3BSD, C89.

Bugs

Before version 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).

2022-10-09 Linux man-pages 6.01