SINH(X) computes the hyperbolic sine of X. 
Fortran 90 and later, for a complex argument Fortran 2008 or later, has a GNU extension
Elemental function
RESULT = SINH(X) 
| X | The type shall be REALorCOMPLEX. | 
The return value has same type and kind as X.
program test_sinh real(8) :: x = - 1.0_8 x = sinh(x) end program test_sinh
| Name | Argument | Return type | Standard | 
| DSINH(X) | REAL(8) X | REAL(8) | Fortran 90 and later | 
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Licensed under the GNU Free Documentation License, Version 1.3.
    https://gcc.gnu.org/onlinedocs/gcc-10.2.0/gfortran/SINH.html