Format
#include <builtin.h> double _fsin( double x);
Language Level: Extension
_fsin calculates the sine of x, where
x is expressed in radians. The value of x
must be less than 2**63. This function causes the compiler to
emit the appropriate 80387 instruction for the calculation of
sine.
Because it is a built-in function and has no backing code in the library:
Return Value
This function returns the sine of a
variable x expressed in radians.
Example
This example calculates y as the sine of
pi/2.
#include <builtin.h> #include <stdio.h>
int main(void)
{
double PI;
pi = 3.1415926535;
printf("The sine of %lf is %lf.\n", pi/2.0, _fsin(pi/2.0));
return 0;
/**********************************************************
The output should be:
The sine of 1.570796 is 1.000000. **********************************************************/ }
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_fasin -- Calculate Arcsine
_fcossin --
Calculate Cosine and Sine
_fsincos --
Calculate Sine and Cosine
sin -- Calculate
Sine
sinh -- Calculate
Hyperbolic Sine
<builtin.h>