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fix ubyte/uword to float conversion crashes on Commander X16

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This commit is contained in:
Irmen de Jong 2021-03-08 23:21:52 +01:00
parent 60e169bd87
commit 9120e1de88
2 changed files with 31 additions and 52 deletions
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13
compiler/res/prog8lib/cx16/floats.p8
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@ -79,10 +79,10 @@ asmsub GIVUAYFAY (uword value @ AY) clobbers(A,X,Y) {
; ---- unsigned 16 bit word in A/Y (lo/hi) to fac1
%asm {{
phx
sta P8ZP_SCRATCH_W2
sta _tmp
sty P8ZP_SCRATCH_B1
tya
ldy P8ZP_SCRATCH_W2
ldy _tmp
jsr GIVAYF ; load it as signed... correct afterwards
lda P8ZP_SCRATCH_B1
bpl +
@ -91,6 +91,7 @@ asmsub GIVUAYFAY (uword value @ AY) clobbers(A,X,Y) {
jsr FADD
+ plx
rts
_tmp .byte 0
_flt65536 .byte 145,0,0,0,0 ; 65536.0
}}
}
@ -128,6 +129,14 @@ asmsub GETADRAY () clobbers(X) -> uword @ AY {
}}
}
asmsub FREADUY (ubyte value @Y) {
; -- 8 bit unsigned Y -> float in fac1
%asm {{
lda #0
jmp GIVAYF
}}
}
sub print_f (float value) {
; ---- prints the floating point value (without a newline).
%asm {{

70
examples/test.p8
View File

@ -3,67 +3,37 @@
%import test_stack
%zeropage dontuse
; TODO fix float conversion crashes on Cx16 (ubyte as float, uword as float)
main {
sub start() {
uword total=0
uword xx
float fl
float fltotal=0.0
ubyte ub = 22
for xx in 0 to 100 {
txt.print_uw(xx*xx)
txt.chrout(',')
}
ub = 22
fl = ub as float
floats.print_f(fl)
txt.nl()
ub = 255
fl = ub as float
floats.print_f(fl)
txt.nl()
xx = 123
fl = xx as float
floats.print_f(fl)
txt.nl()
xx = 55555
fl = xx as float
floats.print_f(fl)
txt.nl()
total = 0
c64.SETTIM(0,0,0)
repeat 5 {
for xx in 1 to 255 {
total += xx*xx
}
fltotal=0.0
for xx in 1 to 255 {
fl = xx as float
fltotal = fl * fl
}
txt.print_uw(total)
txt.nl()
txt.print_uw(c64.RDTIM16())
txt.nl()
txt.nl()
test_stack.test()
; fltotal=0.0
; c64.SETTIM(0,0,0)
; repeat 5 {
; for xx in 1 to 255 {
; fl = xx as float
; ; fl = ub as float
; fltotal = fl * fl
; }
; }
;
; floats.print_f(fltotal)
; txt.nl()
; txt.print_uw(c64.RDTIM16())
; txt.nl()
; txt.nl()
;
; fltotal=0.0
; c64.SETTIM(0,0,0)
; repeat 5 {
; for xx in 1 to 255 {
; fl = xx as float
; ; fl = ub as float
; fltotal = fl ** 2
; }
; }
;
; floats.print_f(fltotal)
; txt.nl()
; txt.print_uw(c64.RDTIM16())
; txt.nl()
; txt.nl()
}
}