F90 - Simple Fortran 90 Examples

F90 or "Fortran 90", is the successor to the Fortran 77 language. While I find this language dauntingly baroque, it's here to stay, and gradually replacing the older language. Some features of Fortran 90 are necessary or useful or even really really nice. Some are useful for trying to use new computers or parallel languages properly. Others make it easy to work with vectors and matrices.

Files you may copy include:

• big_ints.f90, compares regular and "big" integers specified with the KIND qualifier;
• big_ints.out, output;
• matrix_function_test.f90, uses a function that returns a matrix;
• matrix_function_test.out, output;
• mxm.f90, multiplies two matrices using the MATMUL intrinsic;
• mxm.out, output;
• random_prb.f90, demonstrates the random number routines;
• random_prb.out, output;
• random_test.f90, demonstrates the random number routines;
• random_test.out, output;
• recursive_test.f90, demonstrates the use of recursive function definitions;
• recursive_test.out, output;
• sort_test.f90, bubble-sorts a real vector;
• sort_test.out, output;
• where_test.f90, demonstrates the WHERE statement;
• where_test.out, the output;

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