sinh

float       sinhf( float arg );

double      sinh( double arg );

long double sinhl( long double arg );

#define sinh( arg )

Parameters

Return value

If no errors occur, the hyperbolic sine of arg (sinh(arg), or

) is returned.

If a range error due to overflow occurs, ±HUGE_VAL, ±HUGE_VALF, or ±HUGE_VALL is returned.

If a range error occurs due to underflow, the correct result (after rounding) is returned.

Error handling

Errors are reported as specified in math_errhandling.

If the implementation supports IEEE floating-point arithmetic (IEC 60559),

• if the argument is ±0 or ±∞, it is returned unmodified
• if the argument is NaN, NaN is returned

Notes

POSIX specifies that in case of underflow, arg is returned unmodified, and if that is not supported, an implementation-defined value no greater than DBL_MIN, FLT_MIN, and LDBL_MIN is returned.

Example

#include <stdio.h>
#include <math.h>
#include <errno.h>
#include <fenv.h>
 
#pragma STDC FENV_ACCESS ON
int main(void)
{
    printf("sinh(1) = %f\nsinh(-1)=%f\n", sinh(1), sinh(-1));
    printf("log(sinh(1) + cosh(1))=%f\n", log(sinh(1)+cosh(1)));
    // special values
    printf("sinh(+0) = %f\nsinh(-0)=%f\n", sinh(0.0), sinh(-0.0));
    // error handling 
    errno=0; feclearexcept(FE_ALL_EXCEPT);
    printf("sinh(710.5) = %f\n", sinh(710.5));
    if(errno == ERANGE) perror("    errno == ERANGE");
    if(fetestexcept(FE_OVERFLOW)) puts("    FE_OVERFLOW raised");
}

sinh(1) = 1.175201
sinh(-1)=-1.175201
log(sinh(1) + cosh(1))=1.000000
sinh(+0) = 0.000000
sinh(-0)=-0.000000
sinh(710.5) = inf
    errno == ERANGE: Numerical result out of range
    FE_OVERFLOW raised

References

• C11 standard (ISO/IEC 9899:2011):
  • 7.12.5.5 The sinh functions (p: 241-242)
  • 7.25 Type-generic math <tgmath.h> (p: 373-375)
  • F.10.2.5 The sinh functions (p: 520)
• C99 standard (ISO/IEC 9899:1999):
  • 7.12.5.5 The sinh functions (p: 222)
  • 7.22 Type-generic math <tgmath.h> (p: 335-337)
  • F.9.2.5 The sinh functions (p: 457)
• C89/C90 standard (ISO/IEC 9899:1990):
  • 4.5.3.2 The sinh function

See also