sin, sinf, sinh, sinhf

Calculate sines and hyperbolic sines.

double sin(
   double x 
float sin(
   float x
);  // C++ only
long double sin(
   long double x
);  // C++ only
float sinf(
   float x 
double sinh(
   double x 
float sinh(
   float x 
);  // C++ only
long double sinh(
   long double x
);  // C++ only
float sinhf(
   float x


  • x
    Angle in radians.

Return Value

sin returns the sine of x. If x is greater than or equal to 263, or less than or equal to –263, a loss of significance in the result occurs

sinh returns the hyperbolic sine of x. If the result is too large, sinh sets errno to ERANGE and returns ±HUGE_VAL, by default.


SEH Exception

Matherr Exception




± ∞ (sin, sinf)



|x| ≥ 7.104760e+002 (sinh, sinhf)



See _doserrno, errno, _sys_errlist, and _sys_nerr for more information on these, and other, return codes.


C++ allows overloading, so users can call overloads of sin and sinh that take double, float or long double types. In a C program, the sin and sinh functions always take and return double and float, respectively.



Required header

sin, sinf, sinh, sinhf


For additional compatibility information, see Compatibility in the Introduction.


// crt_sincos.c
// This program displays the sine, hyperbolic
// sine, cosine, and hyperbolic cosine of pi / 2.

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

int 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

.NET Framework Equivalent

See Also


Floating-Point Support

acos, acosf

asin, asinf

atan, atanf, atan2, atan2f

cos, cosf, cosh, coshf

tan, tanf, tanh, tanhf