raze-gles/polymer
helixhorned 54721d7461 Make ksqrt take uint32_t, add helper function uint32_t uhypsq(int32_t,int32_t).
uhypsq calculates the hypotenuse using unsigned multiplication. This is
permissible since for arbitrary int32s a and b, the following holds in
two's complement arithmetic:
  (int32_t)((uint32_t)a * b) == (int32_t)((int64_t)a * b)
("Signed and unsigned multiplication is the same on the bit level.")

This fixes various overflows where wall lengths for walls of length > 46340
are calculated, but does not rid us of other overflows in the same vein
(usually dot products between vectors where one point is a wall vertex and
the other a position in a sector).

git-svn-id: https://svn.eduke32.com/eduke32@2791 1a8010ca-5511-0410-912e-c29ae57300e0
2012-07-01 22:11:14 +00:00
..
eduke32 Make ksqrt take uint32_t, add helper function uint32_t uhypsq(int32_t,int32_t). 2012-07-01 22:11:14 +00:00
synthesis.sh synthesis.sh: 2012-03-04 09:33:23 +00:00