Misc/abrash-black-book
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This commit is contained in:
James Gregory 2013-12-30 18:34:31 +11:00
commit 18011c595a
352 changed files with 6040 additions and 6040 deletions
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10
53-02.md
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@ -58,7 +58,7 @@
mov eax,[bp+Dividend]
and eax,eax ;positive dividend?
jns FDP1 ;yes
inc cx ;mark it’s a negative dividend
inc cx ;mark it's a negative dividend
neg eax ;make the dividend positive
FDP1: sub edx,edx ;make it a 64-bit dividend, then shift
; left 16 bits so that result will be
@ -70,7 +70,7 @@
mov ebx,dword ptr [bp+Divisor]
and ebx,ebx ;positive divisor?
jns FDP2 ;yes
dec cx ;mark it’s a negative divisor
dec cx ;mark it's a negative divisor
neg ebx ;make divisor positive
FDP2: div ebx ;divide
shr ebx,1 ;divisor/2, minus 1 if the divisor is
@ -118,7 +118,7 @@
mov bp,sp ;set up local stack frame
mov bx,[bp].Angle
and bx,bx ;make sure angle’s between 0 and 2*pi
and bx,bx ;make sure angle's between 0 and 2*pi
jns CheckInRange
MakePos:;less than 0, so make it positive
add bx,360*10
@ -191,7 +191,7 @@
; Matrix multiplies Xform by SourceVec, and stores the result in
; DestVec. Multiplies a 4x4 matrix times a 4x1 matrix; the result
; is a 4x1 matrix. Cheats by assuming the W coord is 1 and the
; bottom row of the matrix is 0 0 0 1, and doesn’t bother to set
; bottom row of the matrix is 0 0 0 1, and doesn't bother to set
; the W coordinate of the destination.
; C near-callable as:
; void XformVec(Xform WorkingXform, Fixedpoint *SourceVec,
@ -270,7 +270,7 @@
; Matrix multiplies SourceXform1 by SourceXform2 and stores the
; result in DestXform. Multiplies a 4x4 matrix times a 4x4 matrix;
; the result is a 4x4 matrix. Cheats by assuming the bottom row of
; each matrix is 0 0 0 1, and doesn’t bother to set the bottom row
; each matrix is 0 0 0 1, and doesn't bother to set the bottom row
; of the destination.
; C near-callable as:
; void ConcatXforms(Xform SourceXform1, Xform SourceXform2,