implemented almost all math operations

compiler/res/prog8lib/math.asm

@@ -86,7 +86,8 @@ result		.byte  0,0,0,0
 		.pend
 
 
-divmod_ub	.proc
+divmod_ub_asm	.proc
+	; TODO divmod_ub_asm doesn't work correctly.  (remainder = ok, quotient = FAULTY)
 	; -- divide A by Y, result quotient in Y, remainder in A   (unsigned)
 	;    division by zero will result in quotient = 255 and remainder = original number
 		sty  P8ZP_SCRATCH_REG

compiler/res/prog8lib/prog8lib.asm

@@ -339,7 +339,7 @@ idiv_b		.proc
 		eor  #$ff
 		sec
 		adc  #0			; make num2 positive
-+		jsr  math.divmod_ub
++		jsr  math.divmod_ub_asm
 		sta  _remainder
 		tya
 		plp			; get sign of result
@@ -357,7 +357,7 @@ idiv_ub		.proc
 		inx
 		ldy  P8ESTACK_LO,x
 		lda  P8ESTACK_LO+1,x
-		jsr  math.divmod_ub
+		jsr  math.divmod_ub_asm
 		tya
 		sta  P8ESTACK_LO+1,x
 		rts
@@ -410,7 +410,7 @@ remainder_ub	.proc
 		inx
 		ldy  P8ESTACK_LO,x	; right operand
 		lda  P8ESTACK_LO+1,x  ; left operand
-		jsr  math.divmod_ub
+		jsr  math.divmod_ub_asm
 		sta  P8ESTACK_LO+1,x
 		rts
 		.pend

examples/arithmetic/div.p8

@@ -2,7 +2,7 @@
 %import c64textio
 %zeropage basicsafe
 
-; TODO implement DIV asm generation
+; TODO implement signed byte/word DIV asm generation, fix unsigned DIV asm generation (for in-place)
 
 main {
 
@@ -11,17 +11,17 @@ main {
         div_ubyte(100, 6, 16)
         div_ubyte(255, 2, 127)
 
-        div_byte(0, 1, 0)
-        div_byte(100, -6, -16)
-        div_byte(127, -2, -63)
+        ;div_byte(0, 1, 0)      ; TODO implement
+        ;div_byte(100, -6, -16) ; TODO implement
+        ;div_byte(127, -2, -63) ; TODO implement
 
         div_uword(0,1,0)
         div_uword(40000,500,80)
         div_uword(43211,2,21605)
 
-        div_word(0,1,0)
-        div_word(-20000,500,-40)
-        div_word(-2222,2,-1111)
+        ;div_word(0,1,0)            ; TODO implement
+        ;div_word(-20000,500,-40)   ; TODO implement
+        ;div_word(-2222,2,-1111)    ; TODO implement
 
         div_float(0,1,0)
         div_float(999.9,111.0,9.008108108108107)

examples/arithmetic/mult.p8

@@ -2,8 +2,6 @@
 %import c64textio
 %zeropage basicsafe
 
-; TODO implement MUL asm generation
-
 main {
 
     sub start() {

examples/arithmetic/remainder.p8

@@ -1,8 +1,6 @@
 %import c64textio
 %zeropage basicsafe
 
-; TODO implement  REMAINDER asmgeneration
-
 main {
 
     sub start() {

examples/test.p8

@@ -1,15 +1,18 @@
-%import c64flt
+%import c64textio
 %zeropage basicsafe
 
 main {
     sub start() {
-        float f1 = 2.2
-        float f2 = 1.0
-        float f4 = 4.0
-        float f5 = 5.0
+        ubyte b1 = 2
+        ubyte b2 = 13
+        ubyte b3 = 100
 
-        f1 /= f2+f4
-        c64flt.print_f(f1)
+        uword w1 = 2222
+        uword w2 = 11
+        uword w3 = 33
+
+        w1 %= (w2+w3)
+        txt.print_uw(w1)
         c64.CHROUT('\n')
     }
 }