std::sinh,std::sinhf,std::sinhl (3) - Linux Manuals

std::sinh,std::sinhf,std::sinhl: std::sinh,std::sinhf,std::sinhl

NAME

std::sinh,std::sinhf,std::sinhl - std::sinh,std::sinhf,std::sinhl

Synopsis

Defined in header <cmath>
float sinh ( float arg );
float sinhf( float arg ); (since C++11)
double sinh ( double arg ); (1) (2)
long double sinh ( long double arg );
long double sinhl( long double arg ); (3) (since C++11)
double sinh ( IntegralType arg ); (4) (since C++11)

1-3) Computes the hyperbolic sine of arg
4) A set of overloads or a function template accepting an argument of any integral_type. Equivalent to 2) (the argument is cast to double).

Parameters

arg - value of a floating-point or Integral_type

Return value

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

earg
-e-arg
2

) 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, and implementation-defined value no greater than DBL_MIN, FLT_MIN, and LDBL_MIN is returned.

Example

// Run this code

  #include <iostream>
  #include <cmath>
  #include <cerrno>
  #include <cstring>
  #include <cfenv>

  #pragma STDC FENV_ACCESS ON
  int main()
  {
      std::cout << "sinh(1) = " << std::sinh(1) << '\n'
                << "sinh(-1) = " << std::sinh(-1) << '\n'
                << "log(sinh(1)+cosh(1)) = "
                << std::log(std::sinh(1)+std::cosh(1)) << '\n';
      // special values
      std::cout << "sinh(+0) = " << std::sinh(0.0) << '\n'
                << "sinh(-0) = " << std::sinh(-0.0) << '\n';
      // error handling
      errno = 0;
      std::feclearexcept(FE_ALL_EXCEPT);
      std::cout << "sinh(710.5) = " << std::sinh(710.5) << '\n';
      if (errno == ERANGE)
          std::cout << " errno == ERANGE: " << std::strerror(errno) << '\n';
      if (std::fetestexcept(FE_OVERFLOW))
          std::cout << " FE_OVERFLOW raised\n";
  }

Output:

  sinh(1) = 1.1752
  sinh(-1) = -1.1752
  log(sinh(1)+cosh(1)) = 1
  sinh(+0) = 0
  sinh(-0) = -0
  sinh(710.5) = inf
      errno == ERANGE: Numerical result out of range
      FE_OVERFLOW raised