2.GT is a greater than sign (>);

3. LE is less than or equal to the symbol (

4. It is less than the symbol (

Extended data:

The biggest feature is that it is close to the natural description of mathematical formulas and has high execution efficiency in computers. Easy to learn and strict in grammar. Matrix and complex number can be operated directly, similar to matlab.

Since its birth, it has been widely used in the field of numerical calculation and accumulated a large number of efficient and reliable source programs. Many special large-scale numerical calculation computers are optimized for Fortran. Widely used in parallel computing and high performance computing.

References:

Baidu Encyclopedia-Formula Translator