prog8/examples/comparisons_ubyte.p8

%import c64utils
%zeropage basicsafe

main {

    sub start()  {

        ubyte v1
        ubyte v2
        ubyte cr

        c64scr.print("unsigned byte ")

        cr=v1==v2
        cr=v1==v2
        cr=v1==v2
        cr=v1!=v2
        cr=v1!=v2
        cr=v1!=v2
        cr=v1<v2
        cr=v1<v2
        cr=v1<v2
        cr=v1<v2
        cr=v1>v2
        cr=v1>v2
        cr=v1>v2
        cr=v1>v2
        cr=v1>v2
        cr=v1<=v2
        cr=v1<=v2
        cr=v1<=v2
        cr=v1<=v2
        cr=v1>=v2
        cr=v1>=v2
        cr=v1>=v2
        cr=v1>=v2
        cr=v1>=v2

        ; comparisons:
        v1=20
        v2=199
        c64scr.print("v1=20, v2=199\n")
        compare()

        v1=80
        v2=80
        c64scr.print("v1 = v2 = 80\n")
        compare()

        v1=220
        v2=10
        c64scr.print("v1=220, v2=10\n")
        compare()

        return

        sub compare() {
        c64scr.print("  ==  !=  <   >   <=  >=\n")

        if v1==v2
            c64scr.print("  Q ")
        else
            c64scr.print("  . ")
        if v1!=v2
            c64scr.print("  Q ")
        else
            c64scr.print("  . ")

        if v1<v2
            c64scr.print("  Q ")
        else
            c64scr.print("  . ")

        if v1>v2
            c64scr.print("  Q ")
        else
            c64scr.print("  . ")

        if v1<=v2
            c64scr.print("  Q ")
        else
            c64scr.print("  . ")

        if v1>=v2
            c64scr.print("  Q ")
        else
            c64scr.print("  . ")
        c64.CHROUT('\n')

    }

    }

}
word and uword and float comparisons 2018-12-09 15:16:46 +00:00			`%import c64utils`
avoid zp corruption issues and added zp mode for floating point (todo: allocate) 2019-02-02 23:14:56 +00:00			`%zeropage basicsafe`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00
removed the ~ before block names 2019-07-29 21:11:13 +00:00			`main {`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00
			`sub start() {`

			`ubyte v1`
			`ubyte v2`
			`ubyte cr`

fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("unsigned byte ")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00
			`cr=v1==v2`
			`cr=v1==v2`
			`cr=v1==v2`
			`cr=v1!=v2`
			`cr=v1!=v2`
			`cr=v1!=v2`
			`cr=v1<v2`
			`cr=v1<v2`
			`cr=v1<v2`
			`cr=v1<v2`
			`cr=v1>v2`
			`cr=v1>v2`
			`cr=v1>v2`
			`cr=v1>v2`
			`cr=v1>v2`
			`cr=v1<=v2`
			`cr=v1<=v2`
			`cr=v1<=v2`
			`cr=v1<=v2`
			`cr=v1>=v2`
			`cr=v1>=v2`
			`cr=v1>=v2`
			`cr=v1>=v2`
			`cr=v1>=v2`

			`; comparisons:`
			`v1=20`
			`v2=199`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("v1=20, v2=199\n")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00			`compare()`

			`v1=80`
			`v2=80`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("v1 = v2 = 80\n")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00			`compare()`

			`v1=220`
			`v2=10`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("v1=220, v2=10\n")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00			`compare()`

save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`return`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00
avoid pulling in the dbus libraries for now 2020-03-14 13:40:39 +00:00			`sub compare() {`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" == != < > <= >=\n")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`if v1==v2`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" Q ")`
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`else`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" . ")`
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`if v1!=v2`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" Q ")`
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`else`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" . ")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`if v1<v2`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" Q ")`
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`else`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" . ")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`if v1>v2`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" Q ")`
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`else`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" . ")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`if v1<=v2`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" Q ")`
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`else`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" . ")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`if v1>=v2`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" Q ")`
save X register automatically when calling sub that clobbers X 2018-12-09 18:48:59 +00:00			`else`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print(" . ")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00			`c64.CHROUT('\n')`

			`}`

			`}`

			`}`