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https://github.com/irmen/prog8.git
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170 lines
3.0 KiB
Lua
170 lines
3.0 KiB
Lua
%import c64utils
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%zeropage basicsafe
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main {
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sub start() {
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word v1
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word v2
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ubyte cr
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c64scr.print("signed word ")
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cr=v1==v2
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cr=v1==v2
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cr=v1==v2
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cr=v1!=v2
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cr=v1!=v2
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cr=v1!=v2
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cr=v1<v2
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cr=v1<v2
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cr=v1<v2
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cr=v1<v2
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cr=v1>v2
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cr=v1>v2
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cr=v1>v2
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cr=v1>v2
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cr=v1>v2
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cr=v1<=v2
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cr=v1<=v2
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cr=v1<=v2
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cr=v1<=v2
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cr=v1>=v2
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cr=v1>=v2
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cr=v1>=v2
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cr=v1>=v2
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cr=v1>=v2
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; comparisons:
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v1=20
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v2=$00aa
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c64scr.print("v1=20, v2=$00aa\n")
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compare()
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v1=20
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v2=$7a00
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c64scr.print("v1=20, v2=$7a00\n")
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compare()
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v1=$7400
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v2=$22
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c64scr.print("v1=$7400, v2=$22\n")
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compare()
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v1=$7400
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v2=$2a00
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c64scr.print("v1=$7400, v2=$2a00\n")
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compare()
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v1=$7433
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v2=$2a00
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c64scr.print("v1=$7433, v2=$2a00\n")
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compare()
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v1=$7433
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v2=$2aff
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c64scr.print("v1=$7433, v2=$2aff\n")
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compare()
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; with negative numbers:
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v1=-512
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v2=$00aa
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c64scr.print("v1=-512, v2=$00aa\n")
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compare()
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v1=-512
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v2=$7a00
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c64scr.print("v1=-512, v2=$7a00\n")
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compare()
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v1=$7400
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v2=-512
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c64scr.print("v1=$7400, v2=-512\n")
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compare()
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v1=-20000
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v2=-1000
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c64scr.print("v1=-20000, v2=-1000\n")
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compare()
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v1=-1000
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v2=-20000
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c64scr.print("v1=-1000, v2=-20000\n")
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compare()
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v1=-1
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v2=32767
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c64scr.print("v1=-1, v2=32767\n")
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compare()
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v1=32767
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v2=-1
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c64scr.print("v1=32767, v2=-1\n")
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compare()
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v1=$7abb
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v2=$7abb
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c64scr.print("v1 = v2 = 7abb\n")
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compare()
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v1=$7a00
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v2=$7a00
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c64scr.print("v1 = v2 = 7a00\n")
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compare()
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v1=$aa
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v2=$aa
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c64scr.print("v1 = v2 = aa\n")
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compare()
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check_eval_stack()
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return
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sub compare() {
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c64scr.print(" == != < > <= >=\n")
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if v1==v2
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c64scr.print(" Q ")
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else
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c64scr.print(" . ")
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if v1!=v2
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c64scr.print(" Q ")
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else
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c64scr.print(" . ")
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if v1<v2
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c64scr.print(" Q ")
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else
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c64scr.print(" . ")
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if v1>v2
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c64scr.print(" Q ")
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else
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c64scr.print(" . ")
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if v1<=v2
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c64scr.print(" Q ")
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else
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c64scr.print(" . ")
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if v1>=v2
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c64scr.print(" Q ")
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else
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c64scr.print(" . ")
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c64.CHROUT('\n')
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}
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}
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sub check_eval_stack() {
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if X!=255 {
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c64scr.print("x=")
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c64scr.print_ub(X)
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c64scr.print(" error!\n")
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}
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}
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}
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