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Showing content from https://en.cppreference.com/w/cpp/language/../algorithm/../numeric/valarray/../math/sinh.html below:

std::sinh, std::sinhf, std::sinhl - cppreference.com

(1) float       sinh ( float num );

double      sinh ( double num );

long double sinh ( long double num ); (until C++23)

/*floating-point-type*/
            sinh ( /*floating-point-type*/ num );

(since C++23)
(constexpr since C++26)

float       sinhf( float num );

(2) (since C++11)
(constexpr since C++26)

long double sinhl( long double num );

(3) (since C++11)
(constexpr since C++26) template< /*math-floating-point*/ V >

constexpr /*deduced-simd-t*/<V>

            sinh ( const V& v_num ); (S) (since C++26)

template< class Integer >
double      sinh ( Integer num );

(A) (constexpr since C++26)

1-3) Computes the hyperbolic sine of num. The library provides overloads of std::sinh for all cv-unqualified floating-point types as the type of the parameter.(since C++23)

A) Additional overloads are provided for all integer types, which are treated as double.

(since C++11) [edit] Parameters num - floating-point or integer value [edit] Return value

If no errors occur, the hyperbolic sine of

num

(

sinh(num)

, 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.

[edit] Error handling

Errors are reported as specified in math_errhandling.

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

[edit] Notes

POSIX specifies that in case of underflow, num 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.

The additional overloads are not required to be provided exactly as (A). They only need to be sufficient to ensure that for their argument num of integer type, std::sinh(num) has the same effect as std::sinh(static_cast<double>(num)).

[edit] Example 
#include <cerrno>
#include <cfenv>
#include <cmath>
#include <cstring>
#include <iostream>
// #pragma STDC FENV_ACCESS ON
 
int main()
{
    const double x = 42;
 
    std::cout << "sinh(1) = " << std::sinh(1) << '\n'
              << "sinh(-1) = " << std::sinh(-1) << '\n'
              << "log(sinh(" << x << ")+cosh(" << x << ")) = "
              << std::log(std::sinh(x) + std::cosh(x)) << '\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(42)+cosh(42)) = 42
sinh(+0) = 0
sinh(-0) = -0
sinh(710.5) = inf
    errno == ERANGE: Numerical result out of range
    FE_OVERFLOW raised
[edit] See also

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