MMath_ASM.asm questions
by Mike Parker · in Torque Game Engine · 08/25/2004 (10:37 am) · 1 replies
In the mMath_C.cc and mMath_ASM.asm:
Looking at the target.torque.mk file I do not see mMath_ASM.asm in the SOURCE.MATH list. Since it isn't being compiled in, can we assume that these comments are outdated and there is no overflow? Or should mMath_ASM.asm be getting compiled?
// mMath_C.cc
static S32 m_mulDivS32_C(S32 a, S32 b, S32 c)
{
// S64/U64 support in most 32-bit compilers generate
// horrible code, the C version are here just for porting
// assembly implementation is recommended
return (S32) ((S64)a*(S64)b) / (S64)c;
}
// mMath_ASM.asm
;
; static S32 m_mulDivS32_ASM( S32 a, S32 b, S32 c )
;
; // Note: this returns different (but correct) values than the C
; // version. C code must be overflowing...returns -727
; // if a b and c are 1 million, for instance. This version returns
; // 1 million.
// the U32 version also says there are overflowsLooking at the target.torque.mk file I do not see mMath_ASM.asm in the SOURCE.MATH list. Since it isn't being compiled in, can we assume that these comments are outdated and there is no overflow? Or should mMath_ASM.asm be getting compiled?
Torque 3D Owner Robert Blanchet Jr.