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### 8.150 `LLT` — Lexical less than

Description:
  Determines whether one string is lexically less than another string, where the two strings are interpreted as containing ASCII character codes. If the String A and String B are not the same length, the shorter is compared as if spaces were appended to it to form a value that has the same length as the longer.

  In general, the lexical comparison intrinsics `LGE`, `LGT`, `LLE`, and `LLT` differ from the corresponding intrinsic operators `.GE.`, `.GT.`, `.LE.`, and `.LT.`, in that the latter use the processor's character ordering (which is not ASCII on some targets), whereas the former always use the ASCII ordering.

Standard:
  Fortran 77 and later
Class:
  Elemental function
Syntax:
  `RESULT = LLT(STRING_A, STRING_B)`
Arguments:

  STRING_A | Shall be of default `CHARACTER` type.
  STRING_B | Shall be of default `CHARACTER` type.

Return value:
  Returns `.TRUE.` if `STRING_A < STRING_B`, and `.FALSE.` otherwise, based on the ASCII ordering.
Specific names:

  Name | Argument | Return type | Standard
  `LLT(STRING_A, STRING_B)` | `CHARACTER` | `LOGICAL` | Fortran 77 and later

See also:
  LGE, LGT, LLE