Commits on Sep 1, 2023

1. Update bundled GMP to 6.3.0 …

   Changes between GMP version 6.2.* and 6.3.0
   
   BUGS FIXED
   - A possible overflow of type int is avoided for mpz_cmp on huge
     operands.
   - A possible error condition when a malformed file is read with
     mpz_inp_raw is now correctly handled.
   
   FEATURES
   - New public function mpz_prevprime, companion of the existing
     mpz_nextprime.
   - New documented pointer types mpz_ptr, mpz_srcptr, and similar for
     other GMP types. Refer to the manual for full list and suggested
     usage. These types have been present in gmp.h at least since GMP-4.0,
     but previously not advertised to users.
   - Support for 64-bit Arm under Macos.
   - Support for the loongarch64 CPU family.
   - Support for building with LTO, link-time optimisations.
   
   SPEEDUPS
   - New special code for base = 2 in mpz_powm reduces the average time for
     the functions that test primality.
   - Speedup for the function mpz_nextprime on large operands.
   - Speedup for multiplications (some sizes only) thanks to new internal
     functions to compute small negacyclic products.
   - Special assembly code for IBM z13 and later "mainframe" CPUs,
     resulting in a huge speedup.
   - Improved assembly for several 64-bit x86 CPUs, Risc-V, 64-bit Arm.

   

   fingolfin committed Sep 1, 2023
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