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-rwxr-xr-xengine/routines/math.asm196
1 files changed, 0 insertions, 196 deletions
diff --git a/engine/routines/math.asm b/engine/routines/math.asm
deleted file mode 100755
index 0cd6b0b47..000000000
--- a/engine/routines/math.asm
+++ /dev/null
@@ -1,196 +0,0 @@
-_Multiply:: ; 66de
-
-; hMultiplier is one byte.
- ld a, 8
- ld b, a
-
- xor a
- ld [hProduct], a
- ld [hMathBuffer + 1], a
- ld [hMathBuffer + 2], a
- ld [hMathBuffer + 3], a
- ld [hMathBuffer + 4], a
-
-
-.loop
- ld a, [hMultiplier]
- srl a
- ld [hMultiplier], a
- jr nc, .next
-
- ld a, [hMathBuffer + 4]
- ld c, a
- ld a, [hMultiplicand + 2]
- add c
- ld [hMathBuffer + 4], a
-
- ld a, [hMathBuffer + 3]
- ld c, a
- ld a, [hMultiplicand + 1]
- adc c
- ld [hMathBuffer + 3], a
-
- ld a, [hMathBuffer + 2]
- ld c, a
- ld a, [hMultiplicand + 0]
- adc c
- ld [hMathBuffer + 2], a
-
- ld a, [hMathBuffer + 1]
- ld c, a
- ld a, [hProduct]
- adc c
- ld [hMathBuffer + 1], a
-
-.next
- dec b
- jr z, .done
-
-
-; hMultiplicand <<= 1
-
- ld a, [hMultiplicand + 2]
- add a
- ld [hMultiplicand + 2], a
-
- ld a, [hMultiplicand + 1]
- rla
- ld [hMultiplicand + 1], a
-
- ld a, [hMultiplicand + 0]
- rla
- ld [hMultiplicand + 0], a
-
- ld a, [hProduct]
- rla
- ld [hProduct], a
-
- jr .loop
-
-
-.done
- ld a, [hMathBuffer + 4]
- ld [hProduct + 3], a
-
- ld a, [hMathBuffer + 3]
- ld [hProduct + 2], a
-
- ld a, [hMathBuffer + 2]
- ld [hProduct + 1], a
-
- ld a, [hMathBuffer + 1]
- ld [hProduct + 0], a
-
- ret
-; 673e
-
-
-_Divide:: ; 673e
- xor a
- ld [hMathBuffer + 0], a
- ld [hMathBuffer + 1], a
- ld [hMathBuffer + 2], a
- ld [hMathBuffer + 3], a
- ld [hMathBuffer + 4], a
-
- ld a, 9
- ld e, a
-
-.loop
- ld a, [hMathBuffer + 0]
- ld c, a
- ld a, [hDividend + 1]
- sub c
- ld d, a
-
- ld a, [hDivisor]
- ld c, a
- ld a, [hDividend + 0]
- sbc c
- jr c, .next
-
- ld [hDividend + 0], a
-
- ld a, d
- ld [hDividend + 1], a
-
- ld a, [hMathBuffer + 4]
- inc a
- ld [hMathBuffer + 4], a
-
- jr .loop
-
-.next
- ld a, b
- cp 1
- jr z, .done
-
- ld a, [hMathBuffer + 4]
- add a
- ld [hMathBuffer + 4], a
-
- ld a, [hMathBuffer + 3]
- rla
- ld [hMathBuffer + 3], a
-
- ld a, [hMathBuffer + 2]
- rla
- ld [hMathBuffer + 2], a
-
- ld a, [hMathBuffer + 1]
- rla
- ld [hMathBuffer + 1], a
-
- dec e
- jr nz, .next2
-
- ld e, 8
- ld a, [hMathBuffer + 0]
- ld [hDivisor], a
- xor a
- ld [hMathBuffer + 0], a
-
- ld a, [hDividend + 1]
- ld [hDividend + 0], a
-
- ld a, [hDividend + 2]
- ld [hDividend + 1], a
-
- ld a, [hDividend + 3]
- ld [hDividend + 2], a
-
-.next2
- ld a, e
- cp 1
- jr nz, .okay
- dec b
-
-.okay
- ld a, [hDivisor]
- srl a
- ld [hDivisor], a
-
- ld a, [hMathBuffer + 0]
- rr a
- ld [hMathBuffer + 0], a
-
- jr .loop
-
-.done
- ld a, [hDividend + 1]
- ld [hDivisor], a
-
- ld a, [hMathBuffer + 4]
- ld [hDividend + 3], a
-
- ld a, [hMathBuffer + 3]
- ld [hDividend + 2], a
-
- ld a, [hMathBuffer + 2]
- ld [hDividend + 1], a
-
- ld a, [hMathBuffer + 1]
- ld [hDividend + 0], a
-
- ret
-; 67c1