No description
Find a file
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
polymer Make ksqrt take uint32_t, add helper function uint32_t uhypsq(int32_t,int32_t). 2012-07-01 22:11:14 +00:00
polymer-perf svn merge -r 1800:1841 ../polymer 2011-03-13 02:23:18 +00:00
.gitignore Add .gitignore generated from git svn show-ignore. 2012-05-20 07:23:12 +00:00