A limited Fortran interface to the "printf" function in C's stdio.h
A fully Fortran interface to 2 uses of printf() in C. The interface is called as an integer function printf(fmt, value) where fmt is the character string to be output to the terminal and value is the value (default precision real or integer for now) to be interpolated into fmt as it would be in C ex: "this is an int: %d". The return of the Fortran printf() is an integer with the number of chars printed if successful and a negative value if an error occured. There is no need to end fmt with a c_null_char from iso_c_binding but any tab/new line chars need to be concatenated using c_tab (constant defined within fortran-printf as an alias for c_horizontal_tab) or c_new_line instead of using \t or \n within the string (as would be done in C). Apart from the tab/new line chars all parameters passed to printf() need not to accomodate being passed to C (this accomodation is done within the overloaded functions).
- The ability to call
printf()with at least 5 values of varying kinds and types. Any order of these 5 values (and less) should be allowed. - The ability to call
printf()on arrays. - Integration of the library/interface with the Fortran Package Manager fpm
This project is primarily meant to help me learn how to use the C interoperability features of modern Fortran. This may help others learn as well (but I am no expert). If this project ever gets enough features to be useful to you, feel free to use it, but I can't guarantee that it works as intended in all use cases (so it's probably not advised to use it in a large and/or important codebase).