### 8.217 `SET_EXPONENT` — Set the exponent of the model

Description:
  `SET_EXPONENT(X, I)` returns the real number whose fractional part is that that of X and whose exponent part is I.
Standard:
  Fortran 95 and later
Class:
  Elemental function
Syntax:
  `RESULT = SET_EXPONENT(X, I)`
Arguments:

  X | Shall be of type `REAL`.
  I | Shall be of type `INTEGER`.

Return value:
  The return value is of the same type and kind as X. The real number whose fractional part is that that of X and whose exponent part if I is returned; it is `FRACTION(X) * RADIX(X)**I`.
Example:

                PROGRAM test_setexp
                  REAL :: x = 178.1387e-4
                  INTEGER :: i = 17
                  PRINT *, SET_EXPONENT(x, i), FRACTION(x) * RADIX(x)**i
                END PROGRAM