sin(), sinf(), sinl()

Calculate the sine of an angle

Synopsis:

#include <math.h>

double sin( double x );

float sinf( float x );

long double sinl( long double x );

Arguments:

x: The angle, in radians, for which you want to compute the sine.

Library:

libm

Use the -l m option to qcc to link against this library.

Description:

These functions compute the sine of x radians. An argument with a large magnitude may yield a result with little or no significance.

Returns:

The sine value. If x is +/-Inf, these functions return NaN.

Note: If an error occurs, these functions return 0, but this is also a valid mathematical result. If you want to check for errors, set errno to 0, call the function, and then check errno again. These functions don't change errno if no errors occurred.

Examples:

#include <stdio.h>
#include <math.h>
#include <stdlib.h>

int main( void )
  {
    printf( "%f\n", sin(.5) );

    return( EXIT_SUCCESS );
  }

produces the output:

0.479426

Classification:

ANSI, POSIX 1003.1

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	No
Thread	Yes