NAME

sin - sine function

 SYNOPSIS

#include <math.h>

double sin(double x);

 DESCRIPTION

The sin() function computes the sine of its argument x, measured in radians.

An application wishing to check for error situations should set errno to 0 before calling sin(). If errno is non-zero on return, or the return value is NaN, an error has occurred.

The sin() function may lose accuracy when its argument is far from 0.0 .

 RETURN VALUE

Upon successful completion, sin() returns the sine of x.

If x is NaN, NaN is returned and errno may be set to [EDOM].

If x is ±Inf, either 0.0 is returned and errno is set to [EDOM], or NaN is returned and errno may be set to [EDOM].

If the correct result would cause underflow, 0.0 is returned and errno may be set to [ERANGE].

 ERRORS

The sin() function may fail if:

[EDOM]

The value of x is NaN, or x is ±Inf.

[ERANGE]

The result underflows.

No other errors will occur.

 EXAMPLES

None.

 APPLICATION USAGE

None.

 FUTURE DIRECTIONS

None.

 SEE ALSO

asin(), isnan(), <math.h>.

DERIVATION

Derived from Issue 1 of the SVID.