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This directory contains all code for the mpn layer of GMP.
Most subdirectories contain machine-dependent code, written in assembly or
C. The `generic' subdirectory contains default code, used when there is no
machine-dependent replacement for a particular machine.
There is one subdirectory for each architecture. Note that e.g., 32-bit
sparc and 64-bit sparc cannot share any code, and are therefore considered
completely different architecture.
A particular machine will only use code from one such subdirectory, and the
`generic' subdirectory. The architecture-specific subdirectory contains a
hierachy of directories for various architecture variants and
implementations; the top-most level contains code that runs correctly on all
variants.
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