If expressions

[shakna-israel]

If expressions, such as:

if(1 .lt. 10) 10, 20, 30

Are worked around by Ratfor, and it's descendants, showing to be one of the biggest areas of concern in Fortran.

if (a > b) {
  max = a
} else {
  max = b
}

However, no Ratfor successor still exists. GNU Fortran killed their Ratfor support in 2005.

If mex was able to support Ratfor, or ratfiv syntax, it would be worth a lot more to the community as a whole.

ratfiv:

      IF (A .GT. B) THEN
        MAX = A
      ELSE
        MAX = B
      ENDIF

However, computing gotos like this can be difficult, and require several tree walks.