Continued ANSIfication. There are only bits and pieces left now.
Made errno checking explicit after math calls to avoid spurious warnings
Replaced inline copyright notice with #include "copyright.h"
Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
made mixtures work with materials
fixed bug associated with -DSMLFLT option
changed function file calls to allow expressions instead of just vars
updated revision number for release 2.0
added contexts to function files
changed handling of matrix transformations with new MAT4 & XF types dynamic allocation of ray transformations with newrayxf() added missing light source vector transformation to m_brdf.c
Eliminated need to initialize matrix for call to xf() and invxf()
added loop invariant
fixed bugs in instance mapping of modifiers
brought calculation of nv outside if
Initial revision
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