prog8/examples/comparisons_float.p8

%import c64utils
%import c64flt
%zeropage basicsafe

main {

    sub start()  {

        float v1
        float v2
        ubyte cr

        c64scr.print("floating point ")

        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=666.66
        c64scr.print("v1=20, v2=666.66\n")
        compare()

        v1=-20
        v2=666.66
        c64scr.print("v1=-20, v2=666.66\n")
        compare()

        v1=666.66
        v2=555.55
        c64scr.print("v1=666.66, v2=555.55\n")
        compare()

        v1=3.1415
        v2=-3.1415
        c64scr.print("v1 = 3.1415, v2 = -3.1415\n")
        compare()

        v1=3.1415
        v2=3.1415
        c64scr.print("v1 = v2 = 3.1415\n")
        compare()

        v1=0
        v2=0
        c64scr.print("v1 = v2 = 0\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`
split off c64flt library for all floating point routines 2019-01-05 15:09:05 +00:00			`%import c64flt`
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() {`

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

fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("floating point ")`
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=666.66`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("v1=20, v2=666.66\n")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00			`compare()`

			`v1=-20`
			`v2=666.66`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("v1=-20, v2=666.66\n")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00			`compare()`

			`v1=666.66`
			`v2=555.55`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("v1=666.66, v2=555.55\n")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00			`compare()`

			`v1=3.1415`
			`v2=-3.1415`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("v1 = 3.1415, v2 = -3.1415\n")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00			`compare()`

			`v1=3.1415`
			`v2=3.1415`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("v1 = v2 = 3.1415\n")`
word and uword and float comparisons 2018-12-09 15:16:46 +00:00			`compare()`

			`v1=0`
			`v2=0`
fix too greedy removal of loop statement bodies sometimes 2019-01-15 20:35:15 +00:00			`c64scr.print("v1 = v2 = 0\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`

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')`

			`}`

			`}`

			`}`