mirror of
https://github.com/irmen/prog8.git
synced 2024-12-25 08:29:25 +00:00
c128: remove floats module
This commit is contained in:
Irmen de Jong
parent
f8d35f9502
commit
3f64782023
@ -18,6 +18,8 @@ class C128Zeropage(options: CompilationOptions) : Zeropage(options) {
|
||||
init {
|
||||
if (options.floats) {
|
||||
throw InternalCompilerException("C128 target doesn't yet support floating point routines")
|
||||
// note: in git commit labeled 'c128: remove floats module' the floats.p8 and floats.asm files are removed,
|
||||
// they could be retrieved again at a later time if the compiler somehow *does* store the fp variables in bank1.
|
||||
}
|
||||
|
||||
if (options.floats && options.zeropage !in arrayOf(
|
||||
|
||||
@ -1,664 +0,0 @@
|
||||
; --- low level floating point assembly routines for the C128
|
||||
; these are almost all identical to the C64 except for a few details
|
||||
; so we have to have a separate library file for the C128 unfortunately.
|
||||
|
||||
|
||||
FL_ONE_const .byte 129 ; 1.0
|
||||
FL_ZERO_const .byte 0,0,0,0,0 ; 0.0
|
||||
FL_LOG2_const .byte $80, $31, $72, $17, $f8 ; log(2)
|
||||
|
||||
|
||||
floats_store_reg .byte 0 ; temp storage
|
||||
|
||||
|
||||
ub2float .proc
|
||||
; -- convert ubyte in SCRATCH_ZPB1 to float at address A/Y
|
||||
; clobbers A, Y
|
||||
stx P8ZP_SCRATCH_REG
|
||||
sta P8ZP_SCRATCH_W2
|
||||
sty P8ZP_SCRATCH_W2+1
|
||||
ldy P8ZP_SCRATCH_B1
|
||||
lda #0
|
||||
jsr GIVAYF
|
||||
_fac_to_mem ldx P8ZP_SCRATCH_W2
|
||||
ldy P8ZP_SCRATCH_W2+1
|
||||
jsr MOVMF
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
rts
|
||||
.pend
|
||||
|
||||
b2float .proc
|
||||
; -- convert byte in SCRATCH_ZPB1 to float at address A/Y
|
||||
; clobbers A, Y
|
||||
stx P8ZP_SCRATCH_REG
|
||||
sta P8ZP_SCRATCH_W2
|
||||
sty P8ZP_SCRATCH_W2+1
|
||||
lda P8ZP_SCRATCH_B1
|
||||
jsr FREADSA
|
||||
jmp ub2float._fac_to_mem
|
||||
.pend
|
||||
|
||||
uw2float .proc
|
||||
; -- convert uword in SCRATCH_ZPWORD1 to float at address A/Y
|
||||
stx P8ZP_SCRATCH_REG
|
||||
sta P8ZP_SCRATCH_W2
|
||||
sty P8ZP_SCRATCH_W2+1
|
||||
lda P8ZP_SCRATCH_W1
|
||||
ldy P8ZP_SCRATCH_W1+1
|
||||
jsr GIVUAYFAY
|
||||
jmp ub2float._fac_to_mem
|
||||
.pend
|
||||
|
||||
w2float .proc
|
||||
; -- convert word in SCRATCH_ZPWORD1 to float at address A/Y
|
||||
stx P8ZP_SCRATCH_REG
|
||||
sta P8ZP_SCRATCH_W2
|
||||
sty P8ZP_SCRATCH_W2+1
|
||||
ldy P8ZP_SCRATCH_W1
|
||||
lda P8ZP_SCRATCH_W1+1
|
||||
jsr GIVAYF
|
||||
jmp ub2float._fac_to_mem
|
||||
.pend
|
||||
|
||||
|
||||
cast_from_uw .proc
|
||||
; -- uword in A/Y into float var at (P8ZP_SCRATCH_W2)
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr GIVUAYFAY
|
||||
jmp ub2float._fac_to_mem
|
||||
.pend
|
||||
|
||||
|
||||
cast_from_w .proc
|
||||
; -- word in A/Y into float var at (P8ZP_SCRATCH_W2)
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr GIVAYFAY
|
||||
jmp ub2float._fac_to_mem
|
||||
.pend
|
||||
|
||||
|
||||
cast_from_ub .proc
|
||||
; -- ubyte in Y into float var at (P8ZP_SCRATCH_W2)
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FREADUY
|
||||
jmp ub2float._fac_to_mem
|
||||
.pend
|
||||
|
||||
|
||||
cast_from_b .proc
|
||||
; -- byte in A into float var at (P8ZP_SCRATCH_W2)
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FREADSA
|
||||
jmp ub2float._fac_to_mem
|
||||
.pend
|
||||
|
||||
cast_as_uw_into_ya .proc ; also used for float 2 ub
|
||||
; -- cast float at A/Y to uword into Y/A
|
||||
jsr MOVFM
|
||||
jmp cast_FAC1_as_uw_into_ya
|
||||
.pend
|
||||
|
||||
cast_as_w_into_ay .proc ; also used for float 2 b
|
||||
; -- cast float at A/Y to word into A/Y
|
||||
jsr MOVFM
|
||||
jmp cast_FAC1_as_w_into_ay
|
||||
.pend
|
||||
|
||||
cast_FAC1_as_uw_into_ya .proc ; also used for float 2 ub
|
||||
; -- cast fac1 to uword into Y/A
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr GETADR ; into Y/A
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
rts
|
||||
.pend
|
||||
|
||||
cast_FAC1_as_w_into_ay .proc ; also used for float 2 b
|
||||
; -- cast fac1 to word into A/Y
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr AYINT
|
||||
ldy floats.AYINT_facmo
|
||||
lda floats.AYINT_facmo+1
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
rts
|
||||
.pend
|
||||
|
||||
|
||||
stack_b2float .proc
|
||||
; -- b2float operating on the stack
|
||||
inx
|
||||
lda P8ESTACK_LO,x
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FREADSA
|
||||
jmp push_fac1._internal
|
||||
.pend
|
||||
|
||||
stack_w2float .proc
|
||||
; -- w2float operating on the stack
|
||||
inx
|
||||
ldy P8ESTACK_LO,x
|
||||
lda P8ESTACK_HI,x
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr GIVAYF
|
||||
jmp push_fac1._internal
|
||||
.pend
|
||||
|
||||
stack_ub2float .proc
|
||||
; -- ub2float operating on the stack
|
||||
inx
|
||||
lda P8ESTACK_LO,x
|
||||
stx P8ZP_SCRATCH_REG
|
||||
tay
|
||||
lda #0
|
||||
jsr GIVAYF
|
||||
jmp push_fac1._internal
|
||||
.pend
|
||||
|
||||
stack_uw2float .proc
|
||||
; -- uw2float operating on the stack
|
||||
inx
|
||||
lda P8ESTACK_LO,x
|
||||
ldy P8ESTACK_HI,x
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr GIVUAYFAY
|
||||
jmp push_fac1._internal
|
||||
.pend
|
||||
|
||||
stack_float2w .proc ; also used for float2b
|
||||
jsr pop_float_fac1
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr AYINT
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
lda floats.AYINT_facmo
|
||||
sta P8ESTACK_HI,x
|
||||
lda floats.AYINT_facmo+1
|
||||
sta P8ESTACK_LO,x
|
||||
dex
|
||||
rts
|
||||
.pend
|
||||
|
||||
stack_float2uw .proc ; also used for float2ub
|
||||
jsr pop_float_fac1
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr GETADR
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
sta P8ESTACK_HI,x
|
||||
tya
|
||||
sta P8ESTACK_LO,x
|
||||
dex
|
||||
rts
|
||||
.pend
|
||||
|
||||
push_float .proc
|
||||
; ---- push mflpt5 in A/Y onto stack
|
||||
; (taking 3 stack positions = 6 bytes of which 1 is padding)
|
||||
sta P8ZP_SCRATCH_W1
|
||||
sty P8ZP_SCRATCH_W1+1
|
||||
ldy #0
|
||||
lda (P8ZP_SCRATCH_W1),y
|
||||
sta P8ESTACK_LO,x
|
||||
iny
|
||||
lda (P8ZP_SCRATCH_W1),y
|
||||
sta P8ESTACK_HI,x
|
||||
dex
|
||||
iny
|
||||
lda (P8ZP_SCRATCH_W1),y
|
||||
sta P8ESTACK_LO,x
|
||||
iny
|
||||
lda (P8ZP_SCRATCH_W1),y
|
||||
sta P8ESTACK_HI,x
|
||||
dex
|
||||
iny
|
||||
lda (P8ZP_SCRATCH_W1),y
|
||||
sta P8ESTACK_LO,x
|
||||
dex
|
||||
rts
|
||||
.pend
|
||||
|
||||
pop_float .proc
|
||||
; ---- pops mflpt5 from stack to memory A/Y
|
||||
; (frees 3 stack positions = 6 bytes of which 1 is padding)
|
||||
sta P8ZP_SCRATCH_W1
|
||||
sty P8ZP_SCRATCH_W1+1
|
||||
ldy #4
|
||||
inx
|
||||
lda P8ESTACK_LO,x
|
||||
sta (P8ZP_SCRATCH_W1),y
|
||||
dey
|
||||
inx
|
||||
lda P8ESTACK_HI,x
|
||||
sta (P8ZP_SCRATCH_W1),y
|
||||
dey
|
||||
lda P8ESTACK_LO,x
|
||||
sta (P8ZP_SCRATCH_W1),y
|
||||
dey
|
||||
inx
|
||||
lda P8ESTACK_HI,x
|
||||
sta (P8ZP_SCRATCH_W1),y
|
||||
dey
|
||||
lda P8ESTACK_LO,x
|
||||
sta (P8ZP_SCRATCH_W1),y
|
||||
rts
|
||||
.pend
|
||||
|
||||
pop_float_fac1 .proc
|
||||
; -- pops float from stack into FAC1
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr pop_float
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jmp MOVFM
|
||||
.pend
|
||||
|
||||
copy_float .proc
|
||||
; -- copies the 5 bytes of the mflt value pointed to by SCRATCH_W1,
|
||||
; into the 5 bytes pointed to by A/Y. Clobbers A,Y.
|
||||
sta _target+1
|
||||
sty _target+2
|
||||
ldy #4
|
||||
_loop lda (P8ZP_SCRATCH_W1),y
|
||||
_target sta $ffff,y ; modified
|
||||
dey
|
||||
bpl _loop
|
||||
rts
|
||||
.pend
|
||||
|
||||
inc_var_f .proc
|
||||
; -- add 1 to float pointed to by A/Y
|
||||
sta P8ZP_SCRATCH_W1
|
||||
sty P8ZP_SCRATCH_W1+1
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr MOVFM
|
||||
lda #<FL_ONE_const
|
||||
ldy #>FL_ONE_const
|
||||
jsr FADD
|
||||
ldx P8ZP_SCRATCH_W1
|
||||
ldy P8ZP_SCRATCH_W1+1
|
||||
jsr MOVMF
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
rts
|
||||
.pend
|
||||
|
||||
dec_var_f .proc
|
||||
; -- subtract 1 from float pointed to by A/Y
|
||||
sta P8ZP_SCRATCH_W1
|
||||
sty P8ZP_SCRATCH_W1+1
|
||||
stx P8ZP_SCRATCH_REG
|
||||
lda #<FL_ONE_const
|
||||
ldy #>FL_ONE_const
|
||||
jsr MOVFM
|
||||
lda P8ZP_SCRATCH_W1
|
||||
ldy P8ZP_SCRATCH_W1+1
|
||||
jsr FSUB
|
||||
ldx P8ZP_SCRATCH_W1
|
||||
ldy P8ZP_SCRATCH_W1+1
|
||||
jsr MOVMF
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
rts
|
||||
.pend
|
||||
|
||||
|
||||
pop_2_floats_f2_in_fac1 .proc
|
||||
; -- pop 2 floats from stack, load the second one in FAC1 as well
|
||||
lda #<fmath_float2
|
||||
ldy #>fmath_float2
|
||||
jsr pop_float
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr pop_float
|
||||
lda #<fmath_float2
|
||||
ldy #>fmath_float2
|
||||
jmp MOVFM
|
||||
.pend
|
||||
|
||||
|
||||
fmath_float1 .byte 0,0,0,0,0 ; storage for a mflpt5 value
|
||||
fmath_float2 .byte 0,0,0,0,0 ; storage for a mflpt5 value
|
||||
|
||||
|
||||
push_fac1 .proc
|
||||
; -- push the float in FAC1 onto the stack
|
||||
stx P8ZP_SCRATCH_REG
|
||||
_internal ldx #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr MOVMF
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
jmp push_float
|
||||
.pend
|
||||
|
||||
div_f .proc
|
||||
; -- push f1/f2 on stack
|
||||
jsr pop_2_floats_f2_in_fac1
|
||||
stx P8ZP_SCRATCH_REG
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr FDIV
|
||||
jmp push_fac1._internal
|
||||
.pend
|
||||
|
||||
add_f .proc
|
||||
; -- push f1+f2 on stack
|
||||
jsr pop_2_floats_f2_in_fac1
|
||||
stx P8ZP_SCRATCH_REG
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr FADD
|
||||
jmp push_fac1._internal
|
||||
.pend
|
||||
|
||||
sub_f .proc
|
||||
; -- push f1-f2 on stack
|
||||
jsr pop_2_floats_f2_in_fac1
|
||||
stx P8ZP_SCRATCH_REG
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr FSUB
|
||||
jmp push_fac1._internal
|
||||
.pend
|
||||
|
||||
mul_f .proc
|
||||
; -- push f1*f2 on stack
|
||||
jsr pop_2_floats_f2_in_fac1
|
||||
stx P8ZP_SCRATCH_REG
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr FMULT
|
||||
jmp push_fac1._internal
|
||||
.pend
|
||||
|
||||
neg_f .proc
|
||||
; -- toggle the sign bit on the stack
|
||||
lda P8ESTACK_HI+3,x
|
||||
eor #$80
|
||||
sta P8ESTACK_HI+3,x
|
||||
rts
|
||||
.pend
|
||||
|
||||
var_fac1_less_f .proc
|
||||
; -- is the float in FAC1 < the variable AY?
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FCOMP
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
cmp #255
|
||||
beq +
|
||||
lda #0
|
||||
rts
|
||||
+ lda #1
|
||||
rts
|
||||
.pend
|
||||
|
||||
var_fac1_lesseq_f .proc
|
||||
; -- is the float in FAC1 <= the variable AY?
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FCOMP
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
cmp #0
|
||||
beq +
|
||||
cmp #255
|
||||
beq +
|
||||
lda #0
|
||||
rts
|
||||
+ lda #1
|
||||
rts
|
||||
.pend
|
||||
|
||||
var_fac1_greater_f .proc
|
||||
; -- is the float in FAC1 > the variable AY?
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FCOMP
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
cmp #1
|
||||
beq +
|
||||
lda #0
|
||||
rts
|
||||
+ lda #1
|
||||
rts
|
||||
.pend
|
||||
|
||||
var_fac1_greatereq_f .proc
|
||||
; -- is the float in FAC1 >= the variable AY?
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FCOMP
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
cmp #0
|
||||
beq +
|
||||
cmp #1
|
||||
beq +
|
||||
lda #0
|
||||
rts
|
||||
+ lda #1
|
||||
rts
|
||||
.pend
|
||||
|
||||
var_fac1_notequal_f .proc
|
||||
; -- are the floats numbers in FAC1 and the variable AY *not* identical?
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FCOMP
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
and #1
|
||||
rts
|
||||
.pend
|
||||
|
||||
vars_equal_f .proc
|
||||
; -- are the mflpt5 numbers in P8ZP_SCRATCH_W1 and AY identical?
|
||||
sta P8ZP_SCRATCH_W2
|
||||
sty P8ZP_SCRATCH_W2+1
|
||||
ldy #0
|
||||
lda (P8ZP_SCRATCH_W1),y
|
||||
cmp (P8ZP_SCRATCH_W2),y
|
||||
bne _false
|
||||
iny
|
||||
lda (P8ZP_SCRATCH_W1),y
|
||||
cmp (P8ZP_SCRATCH_W2),y
|
||||
bne _false
|
||||
iny
|
||||
lda (P8ZP_SCRATCH_W1),y
|
||||
cmp (P8ZP_SCRATCH_W2),y
|
||||
bne _false
|
||||
iny
|
||||
lda (P8ZP_SCRATCH_W1),y
|
||||
cmp (P8ZP_SCRATCH_W2),y
|
||||
bne _false
|
||||
iny
|
||||
lda (P8ZP_SCRATCH_W1),y
|
||||
cmp (P8ZP_SCRATCH_W2),y
|
||||
bne _false
|
||||
lda #1
|
||||
rts
|
||||
_false lda #0
|
||||
rts
|
||||
.pend
|
||||
|
||||
equal_f .proc
|
||||
; -- are the two mflpt5 numbers on the stack identical?
|
||||
inx
|
||||
inx
|
||||
inx
|
||||
inx
|
||||
lda P8ESTACK_LO-3,x
|
||||
cmp P8ESTACK_LO,x
|
||||
bne _equals_false
|
||||
lda P8ESTACK_LO-2,x
|
||||
cmp P8ESTACK_LO+1,x
|
||||
bne _equals_false
|
||||
lda P8ESTACK_LO-1,x
|
||||
cmp P8ESTACK_LO+2,x
|
||||
bne _equals_false
|
||||
lda P8ESTACK_HI-2,x
|
||||
cmp P8ESTACK_HI+1,x
|
||||
bne _equals_false
|
||||
lda P8ESTACK_HI-1,x
|
||||
cmp P8ESTACK_HI+2,x
|
||||
bne _equals_false
|
||||
_equals_true lda #1
|
||||
_equals_store inx
|
||||
sta P8ESTACK_LO+1,x
|
||||
rts
|
||||
_equals_false lda #0
|
||||
beq _equals_store
|
||||
.pend
|
||||
|
||||
notequal_f .proc
|
||||
; -- are the two mflpt5 numbers on the stack different?
|
||||
jsr equal_f
|
||||
eor #1 ; invert the result
|
||||
sta P8ESTACK_LO+1,x
|
||||
rts
|
||||
.pend
|
||||
|
||||
vars_less_f .proc
|
||||
; -- is float in AY < float in P8ZP_SCRATCH_W2 ?
|
||||
jsr MOVFM
|
||||
lda P8ZP_SCRATCH_W2
|
||||
ldy P8ZP_SCRATCH_W2+1
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FCOMP
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
cmp #255
|
||||
bne +
|
||||
lda #1
|
||||
rts
|
||||
+ lda #0
|
||||
rts
|
||||
.pend
|
||||
|
||||
vars_lesseq_f .proc
|
||||
; -- is float in AY <= float in P8ZP_SCRATCH_W2 ?
|
||||
jsr MOVFM
|
||||
lda P8ZP_SCRATCH_W2
|
||||
ldy P8ZP_SCRATCH_W2+1
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FCOMP
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
cmp #255
|
||||
bne +
|
||||
- lda #1
|
||||
rts
|
||||
+ cmp #0
|
||||
beq -
|
||||
lda #0
|
||||
rts
|
||||
.pend
|
||||
|
||||
less_f .proc
|
||||
; -- is f1 < f2?
|
||||
jsr compare_floats
|
||||
cmp #255
|
||||
beq compare_floats._return_true
|
||||
bne compare_floats._return_false
|
||||
.pend
|
||||
|
||||
|
||||
lesseq_f .proc
|
||||
; -- is f1 <= f2?
|
||||
jsr compare_floats
|
||||
cmp #255
|
||||
beq compare_floats._return_true
|
||||
cmp #0
|
||||
beq compare_floats._return_true
|
||||
bne compare_floats._return_false
|
||||
.pend
|
||||
|
||||
greater_f .proc
|
||||
; -- is f1 > f2?
|
||||
jsr compare_floats
|
||||
cmp #1
|
||||
beq compare_floats._return_true
|
||||
bne compare_floats._return_false
|
||||
.pend
|
||||
|
||||
greatereq_f .proc
|
||||
; -- is f1 >= f2?
|
||||
jsr compare_floats
|
||||
cmp #1
|
||||
beq compare_floats._return_true
|
||||
cmp #0
|
||||
beq compare_floats._return_true
|
||||
bne compare_floats._return_false
|
||||
.pend
|
||||
|
||||
compare_floats .proc
|
||||
lda #<fmath_float2
|
||||
ldy #>fmath_float2
|
||||
jsr pop_float
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr pop_float
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr MOVFM ; fac1 = flt1
|
||||
lda #<fmath_float2
|
||||
ldy #>fmath_float2
|
||||
stx P8ZP_SCRATCH_REG
|
||||
jsr FCOMP ; A = flt1 compared with flt2 (0=equal, 1=flt1>flt2, 255=flt1<flt2)
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
rts
|
||||
_return_false lda #0
|
||||
_return_result sta P8ESTACK_LO,x
|
||||
dex
|
||||
rts
|
||||
_return_true lda #1
|
||||
bne _return_result
|
||||
.pend
|
||||
|
||||
set_array_float_from_fac1 .proc
|
||||
; -- set the float in FAC1 in the array (index in A, array in P8ZP_SCRATCH_W1)
|
||||
sta P8ZP_SCRATCH_B1
|
||||
asl a
|
||||
asl a
|
||||
clc
|
||||
adc P8ZP_SCRATCH_B1
|
||||
ldy P8ZP_SCRATCH_W1+1
|
||||
clc
|
||||
adc P8ZP_SCRATCH_W1
|
||||
bcc +
|
||||
iny
|
||||
+ stx floats_store_reg
|
||||
tax
|
||||
jsr MOVMF
|
||||
ldx floats_store_reg
|
||||
rts
|
||||
.pend
|
||||
|
||||
|
||||
set_0_array_float .proc
|
||||
; -- set a float in an array to zero (index in A, array in P8ZP_SCRATCH_W1)
|
||||
sta P8ZP_SCRATCH_B1
|
||||
asl a
|
||||
asl a
|
||||
clc
|
||||
adc P8ZP_SCRATCH_B1
|
||||
tay
|
||||
lda #0
|
||||
sta (P8ZP_SCRATCH_W1),y
|
||||
iny
|
||||
sta (P8ZP_SCRATCH_W1),y
|
||||
iny
|
||||
sta (P8ZP_SCRATCH_W1),y
|
||||
iny
|
||||
sta (P8ZP_SCRATCH_W1),y
|
||||
iny
|
||||
sta (P8ZP_SCRATCH_W1),y
|
||||
rts
|
||||
.pend
|
||||
|
||||
|
||||
set_array_float .proc
|
||||
; -- set a float in an array to a value (index in A, float in P8ZP_SCRATCH_W1, array in P8ZP_SCRATCH_W2)
|
||||
sta P8ZP_SCRATCH_B1
|
||||
asl a
|
||||
asl a
|
||||
clc
|
||||
adc P8ZP_SCRATCH_B1
|
||||
adc P8ZP_SCRATCH_W2
|
||||
ldy P8ZP_SCRATCH_W2+1
|
||||
bcc +
|
||||
iny
|
||||
+ jmp copy_float
|
||||
; -- copies the 5 bytes of the mflt value pointed to by SCRATCH_ZPWORD1,
|
||||
; into the 5 bytes pointed to by A/Y. Clobbers A,Y.
|
||||
.pend
|
||||
|
||||
|
||||
@ -1,161 +0,0 @@
|
||||
; Prog8 definitions for floating point handling on the Commodore 128
|
||||
|
||||
; NOTE: it can't currently be used at all because the float variables
|
||||
; on the c128 have to be stored in memory bank 1 (separate bank)
|
||||
; and prog8 can't do that now (it just inlines everything)
|
||||
|
||||
%option enable_floats ; this is here to trigger the compiler error.
|
||||
|
||||
floats {
|
||||
; ---- this block contains C-128 compatible floating point related functions ----
|
||||
|
||||
const float PI = 3.141592653589793
|
||||
const float TWOPI = 6.283185307179586
|
||||
|
||||
|
||||
; ---- ROM float functions ----
|
||||
|
||||
; note: the fac1 and fac2 are working registers and take 6 bytes each,
|
||||
; floats in memory (and rom) are stored in 5-byte MFLPT packed format.
|
||||
|
||||
; note: fac1/2 might get clobbered even if not mentioned in the function's name.
|
||||
; note: for subtraction and division, the left operand is in fac2, the right operand in fac1.
|
||||
|
||||
romsub $af00 = AYINT() clobbers(A,X,Y) ; fac1-> signed word in 102-103 ($66-$67) MSB FIRST. (might throw ILLEGAL QUANTITY)
|
||||
|
||||
; GIVAYF: signed word in Y/A (note different lsb/msb order) -> float in fac1
|
||||
; there is also floats.GIVUAYFAY - unsigned word in A/Y (lo/hi) to fac1
|
||||
; (tip: use GIVAYFAY to use A/Y input; lo/hi switched to normal order)
|
||||
romsub $af03 = GIVAYF(ubyte lo @ Y, ubyte hi @ A) clobbers(A,X,Y)
|
||||
|
||||
romsub $af06 = FOUT() clobbers(X) -> uword @ AY ; fac1 -> string, address returned in AY
|
||||
; romsub $af09 = VAL_1() clobbers(A,X,Y) ; convert ASCII string to floating point [not yet implemented!!!]
|
||||
|
||||
; fac1 -> unsigned word in Y/A (might throw ILLEGAL QUANTITY) (result also in $14/15)
|
||||
; (tip: use GETADRAY to get A/Y output; lo/hi switched to normal little endian order)
|
||||
romsub $af0c = GETADR() clobbers(X) -> ubyte @ Y, ubyte @ A
|
||||
romsub $af0f = FLOATC() clobbers(A,X,Y) ; convert address to floating point
|
||||
|
||||
romsub $af12 = FSUB(uword mflpt @ AY) clobbers(A,X,Y) ; fac1 = mflpt from A/Y - fac1
|
||||
romsub $af15 = FSUBT() clobbers(A,X,Y) ; fac1 = fac2-fac1 mind the order of the operands NOTE: use FSUBT2() instead!
|
||||
romsub $af18 = FADD(uword mflpt @ AY) clobbers(A,X,Y) ; fac1 += mflpt value from A/Y
|
||||
romsub $af1b = FADDT() clobbers(A,X,Y) ; fac1 += fac2 NOTE: use FADDT2() instead!
|
||||
romsub $af1e = FMULT(uword mflpt @ AY) clobbers(A,X,Y) ; fac1 *= mflpt value from A/Y
|
||||
romsub $af21 = FMULTT() clobbers(A,X,Y) ; fac1 *= fac2 NOTE: use FMULTT2() instead!
|
||||
romsub $af24 = FDIV(uword mflpt @ AY) clobbers(A,X,Y) ; fac1 = mflpt in A/Y / fac1
|
||||
romsub $af27 = FDIVT() clobbers(A,X,Y) ; fac1 = fac2/fac1 mind the order of the operands NOTE: use FDIVT2() instead!
|
||||
romsub $af2a = LOG() clobbers(A,X,Y) ; fac1 = LN(fac1) (natural log)
|
||||
romsub $af2d = INT() clobbers(A,X,Y) ; INT() truncates, use FADDH first to round instead of trunc
|
||||
romsub $af30 = SQR() clobbers(A,X,Y) ; fac1 = SQRT(fac1)
|
||||
romsub $af33 = NEGOP() clobbers(A) ; switch the sign of fac1 (fac1 = -fac1)
|
||||
romsub $af36 = FPWR(uword mflpt @ AY) clobbers(A,X,Y) ; fac1 = fac2 ** float in A/Y
|
||||
romsub $af39 = FPWRT() clobbers(A,X,Y) ; fac1 = fac2 ** fac1 NOTE: use FPWRT2() instead!
|
||||
romsub $af3c = EXP() clobbers(A,X,Y) ; fac1 = EXP(fac1) (e ** fac1)
|
||||
romsub $af3f = COS() clobbers(A,X,Y) ; fac1 = COS(fac1)
|
||||
romsub $af42 = SIN() clobbers(A,X,Y) ; fac1 = SIN(fac1)
|
||||
romsub $af45 = TAN() clobbers(A,X,Y) ; fac1 = TAN(fac1)
|
||||
romsub $af48 = ATN() clobbers(A,X,Y) ; fac1 = ATN(fac1)
|
||||
romsub $af4b = ROUND() clobbers(A,X,Y) ; round fac1
|
||||
romsub $af4e = ABS() clobbers(A,X,Y) ; fac1 = ABS(fac1)
|
||||
romsub $af51 = SIGN() clobbers(X,Y) -> ubyte @ A ; SIGN(fac1) to A, $ff, $0, $1 for negative, zero, positive
|
||||
romsub $af54 = FCOMP(uword mflpt @ AY) clobbers(X,Y) -> ubyte @ A ; A = compare fac1 to mflpt in A/Y, 0=equal 1=fac1 is greater, 255=fac1 is less than
|
||||
romsub $af57 = RND_0() clobbers(A,X,Y) ; fac1 = RND(fac1) float random number generator
|
||||
romsub $af57 = RND() clobbers(A,X,Y) ; alias for RND_0
|
||||
romsub $af5a = CONUPK(uword mflpt @ AY) clobbers(A,X,Y) ; load mflpt value from memory in A/Y into fac2
|
||||
romsub $af5d = ROMUPK(uword mflpt @ AY) clobbers(A,X,Y) ; load mflpt value from memory in current bank in A/Y into fac2
|
||||
romsub $af60 = MOVFRM(uword mflpt @ AY) clobbers(A,X,Y) ; load mflpt value from memory in A/Y into fac1 (use MOVFM instead)
|
||||
romsub $af63 = MOVFM(uword mflpt @ AY) clobbers(A,X,Y) ; load mflpt value from memory in A/Y into fac1
|
||||
romsub $af66 = MOVMF(uword mflpt @ XY) clobbers(A,X,Y) ; store fac1 to memory X/Y as 5-byte mflpt
|
||||
romsub $af69 = MOVFA() clobbers(A,X) ; copy fac2 to fac1
|
||||
romsub $af6c = MOVAF() clobbers(A,X) ; copy fac1 to fac2 (rounded)
|
||||
|
||||
; X16 additions TODO so.... not on c128 !?
|
||||
romsub $af6f = FADDH() clobbers(A,X,Y) ; fac1 += 0.5, for rounding- call this before INT
|
||||
romsub $af72 = FADDT2() clobbers(A,X,Y) ; fac1 += fac2
|
||||
romsub $af75 = ZEROFC() clobbers(A,X,Y) ; fac1 = 0
|
||||
romsub $af78 = NORMAL() clobbers(A,X,Y) ; normalize fac1 (?)
|
||||
romsub $af7b = NEGFAC() clobbers(A) ; switch the sign of fac1 (fac1 = -fac1) (juse use NEGOP() instead!)
|
||||
romsub $af7e = FMULTT2() clobbers(A,X,Y) ; fac1 *= fac2
|
||||
romsub $af81 = MUL10() clobbers(A,X,Y) ; fac1 *= 10
|
||||
romsub $af84 = DIV10() clobbers(A,X,Y) ; fac1 /= 10 , CAUTION: result is always positive!
|
||||
romsub $af87 = FDIVT2() clobbers(A,X,Y) ; fac1 = fac2/fac1 mind the order of the operands
|
||||
romsub $af8a = MOVEF() clobbers(A,X) ; copy fac1 to fac2
|
||||
romsub $af8d = SGN() clobbers(A,X,Y) ; fac1 = SGN(fac1), result of SIGN (-1, 0 or 1)
|
||||
romsub $af90 = FLOAT() clobbers(A,X,Y) ; FAC = (s8).A
|
||||
romsub $af93 = FLOATS() clobbers(A,X,Y) ; FAC = (s16)facho+1:facho
|
||||
romsub $af9C = QINT() clobbers(A,X,Y) ; facho:facho+1:facho+2:facho+3 = u32(FAC)
|
||||
romsub $af9f = FINLOG(byte value @A) clobbers (A, X, Y) ; fac1 += signed byte in A
|
||||
romsub $afa5 = FPWRT2() clobbers(A,X,Y) ; fac1 = fac2 ** fac1
|
||||
|
||||
asmsub FREADSA (byte value @A) clobbers(A,X,Y) {
|
||||
; ---- 8 bit signed A -> float in fac1
|
||||
%asm {{
|
||||
tay
|
||||
bpl +
|
||||
lda #$ff
|
||||
jmp GIVAYF
|
||||
+ lda #0
|
||||
jmp GIVAYF
|
||||
}}
|
||||
}
|
||||
|
||||
asmsub GIVUAYFAY (uword value @ AY) clobbers(A,X,Y) {
|
||||
; ---- unsigned 16 bit word in A/Y (lo/hi) to fac1
|
||||
%asm {{
|
||||
phx
|
||||
sty $64 ; facmo
|
||||
sta $65 ; facmo+1
|
||||
ldx #$90
|
||||
sec
|
||||
jsr FLOATC
|
||||
plx
|
||||
rts
|
||||
}}
|
||||
}
|
||||
|
||||
asmsub GIVAYFAY (uword value @ AY) clobbers(A,X,Y) {
|
||||
; ---- signed 16 bit word in A/Y (lo/hi) to float in fac1
|
||||
%asm {{
|
||||
sta P8ZP_SCRATCH_B1
|
||||
tya
|
||||
ldy P8ZP_SCRATCH_B1
|
||||
jmp GIVAYF ; this uses the inverse order, Y/A
|
||||
}}
|
||||
}
|
||||
|
||||
asmsub GETADRAY () clobbers(X) -> uword @ AY {
|
||||
; ---- fac1 to unsigned word in A/Y
|
||||
%asm {{
|
||||
jsr GETADR ; this uses the inverse order, Y/A
|
||||
sta P8ZP_SCRATCH_B1
|
||||
tya
|
||||
ldy P8ZP_SCRATCH_B1
|
||||
rts
|
||||
}}
|
||||
}
|
||||
|
||||
asmsub FREADUY (ubyte value @Y) {
|
||||
; -- 8 bit unsigned Y -> float in fac1
|
||||
%asm {{
|
||||
lda #0
|
||||
jmp GIVAYF
|
||||
}}
|
||||
}
|
||||
|
||||
&uword AYINT_facmo = $66 ; $66/$67 contain result of AYINT
|
||||
|
||||
sub rndf() -> float {
|
||||
%asm {{
|
||||
stx P8ZP_SCRATCH_REG
|
||||
lda #1
|
||||
jsr RND_0
|
||||
ldx P8ZP_SCRATCH_REG
|
||||
rts
|
||||
}}
|
||||
}
|
||||
|
||||
|
||||
%asminclude "library:c128/floats.asm"
|
||||
%asminclude "library:c64/floats_funcs.asm"
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user