Calculate sines and hyperbolic sines.
#include <math.h>
double sin( double x );
double sinh( double x );
long double _sinl( long double x );
long double _sinhl( long double x );
| x | Angle in radians |
The sin and sinh functions find the sine and hyperbolic sine of x, respectively. The _sinl and _sinhl functions are the 80-bit counterparts and use an 80-bit, 10-byte coprocessor form of arguments and return values. See the reference page on the long double functions for more details on this data type.
The sin functions return the sine of x. If x is large, a partial loss of significance in the result may occur, and sin generates a _PLOSS error. If x is so large that significance is completely lost, the sin function prints a _TLOSS message to stderr and returns 0. In both cases, errno is set to ERANGE.
The sinh function returns the hyperbolic sine of x. If the result is too large, sinh sets errno to ERANGE and returns ±HUGE_VAL. Error handling can be changed with the _matherr function.
sin, sinh
Standards:ANSI, UNIX
16-Bit:DOS, QWIN, WIN, WIN DLL
32-Bit:DOS32X
_sinl, _sinhl
Standards:None
16-Bit:DOS, QWIN, WIN, WIN DLL
32-Bit:None
acos functions, asin functions, atan functions, cos functions, tan functions
/* SINCOS.C: This program displays the sine, hyperbolic sine, cosine,
* and hyperbolic cosine of pi / 2.
*/
#include <math.h>
#include <stdio.h>
void main( void )
{
double pi = 3.1415926535;
double x, y;
x = pi / 2;
y = sin( x );
printf( "sin( %f ) = %f\n", x, y );
y = sinh( x );
printf( "sinh( %f ) = %f\n",x, y );
y = cos( x );
printf( "cos( %f ) = %f\n", x, y );
y = cosh( x );
printf( "cosh( %f ) = %f\n",x, y );
}
sin( 1.570796 ) = 1.000000
sinh( 1.570796 ) = 2.301299
cos( 1.570796 ) = 0.000000
cosh( 1.570796 ) = 2.509178