Peaceful chess queen armies: Difference between revisions
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=={{header|Fortran}}==
{{works with|gfortran|11.2.1}}
The example demonstrates modern Fortran’s capabilities for integer bit manipulation, using large machine integers (and their entire bitrange) as bitmaps to represent queen armies. Complicated (but nevertheless single-statement) expressions of such integers represent such operations as rotating a chessboard and checking for any attacks.
There are two Fortran programs and a driver script. One program generates a Fortran module for basic operations; the other program (which must be linked with the generated module) does the actual work. The driver script is for Unix shell.
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