memrev - reverse an array in place

       Lars Wirzenius (lars.wirzenius@helsinki.fi)

Publib                                        C Programmer's Manual                                 MEMREV(3pub)

memrev will reverse an array, by swapping the contents of its elements.

       To reverse an integer array one might do the following.

            int array[4] = { 1, 2, 3, 4 };

            memrev(array, sizeof(array[0]), 4);

       This will result in the array being { 4, 3, 2, 1 }.

       memrev - reverse an array in place

memrev returns its first argument.

publib(3), strrev(3), memshuffle(3)

       #include <publib.h>
       void *memrev(void *block, size_t elsize, size_t elnum);