joymaproundvalues
 23 March 2025
 by Joyeuse
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    A C program that processes .map files (or any file) on Windows.
    It “rounds” numeric tokens in the file according to the following rules:

    1. By default (with no -p flag), if a token is written in standard notation
       (i.e. without an 'e' or 'E'):
         - If a run of at least three consecutive zeros is found in its fractional part
           (after at least one nonzero digit), the token is truncated at that point.
           For example:
             - "-0.61000000009" becomes "-0.61"
             - "3.2901920001" becomes "3.290192"
         - Otherwise, if a run of at least three consecutive nines is found in the fractional part,
           the token is rounded to the number of decimals preceding the run.
           For example:
             - "-0.9749999999999998" becomes "-0.975"
         - If neither condition is met, the token remains unchanged.
       For tokens in scientific notation (containing 'e' or 'E'):
         - If fabs(val) < 1e-6, output "0"; otherwise, leave unchanged.
    
    2. With the optional precision flag (-precision or -p), every numeric token is 
       rounded to the specified number of decimal places using standard rounding.
       For example, with “-p 4” the token “2.123456789” becomes “2.1235”.

    3. File/Directory handling:
         - No argument: processes all .map files in the current directory.
         - A directory path: processes all .map files in that directory.
         - A full file path: processes that file regardless of extension.

    4. Flags:
         - -verbose      : show line‐by‐line changes.
         - -silent or -s : do not prompt for commit and do not pause for key input.

    5. Timing and user confirmation:
         - The program prints the number of edits and processing time (seconds+milliseconds) for each file.
         - If changes were made and not in silent mode, it prompts “Press Y to commit …”.
         - If no prompt was given (either because no edits occurred or silent mode is active),
           the program pauses for a key input before closing (unless silent mode is enabled).