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degironc authored
c-routine for a 16-byte integer array taken verbatim from the optimized c version reported in https://en.wikipedia.org/wiki/Fletcher%27s_checksum#Optimizations except for the fact that the data size is not an argument of the function but rather the address of its location is passed, as this is what a fortran call passes as reference. The type of these variables is also defined as uint32_t instead of size_t because this is what fortran implicitely does. Fortran interfaces to a generic subroutine fletcher32_cksum also defined in UtilXlib/fletcher32_mod.f90 git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@13824 c92efa57-630b-4861-b058-cf58834340f0
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