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prog8/compiler/res/prog8lib/c64/floats_funcs.asm

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; --- floating point builtin functions
abs_f_stack .proc
; -- push abs(AY) on stack
jsr floats.MOVFM
jsr floats.ABS
jmp push_fac1
.pend
abs_f_fac1 .proc
; -- FAC1 = abs(AY)
jsr floats.MOVFM
jmp floats.ABS
.pend
func_atan_stack .proc
jsr func_atan_fac1
jmp push_fac1
.pend
func_atan_fac1 .proc
jsr MOVFM
stx P8ZP_SCRATCH_REG
jsr ATN
ldx P8ZP_SCRATCH_REG
rts
.pend
func_ceil_stack .proc
jsr func_ceil_fac1
jmp push_fac1
.pend
func_ceil_fac1 .proc
; -- ceil: tr = int(f); if tr==f -> return else return tr+1
jsr MOVFM
stx P8ZP_SCRATCH_REG
ldx #<fmath_float1
ldy #>fmath_float1
jsr MOVMF
jsr INT
lda #<fmath_float1
ldy #>fmath_float1
jsr FCOMP
cmp #0
beq +
lda #<FL_ONE_const
ldy #>FL_ONE_const
jsr FADD
+ ldx P8ZP_SCRATCH_REG
rts
.pend
func_floor_stack .proc
jsr func_floor_fac1
jmp push_fac1
.pend
func_floor_fac1 .proc
jsr MOVFM
stx P8ZP_SCRATCH_REG
jsr INT
ldx P8ZP_SCRATCH_REG
rts
.pend
func_round_stack .proc
jsr func_round_fac1
jmp push_fac1
.pend
func_round_fac1 .proc
jsr MOVFM
stx P8ZP_SCRATCH_REG
jsr FADDH
jsr INT
ldx P8ZP_SCRATCH_REG
rts
.pend
func_sin_stack .proc
jsr func_sin_fac1
jmp push_fac1
.pend
func_sin_fac1 .proc
jsr MOVFM
stx P8ZP_SCRATCH_REG
jsr SIN
ldx P8ZP_SCRATCH_REG
rts
.pend
func_cos_stack .proc
jsr func_cos_fac1
jmp push_fac1
.pend
func_cos_fac1 .proc
jsr MOVFM
stx P8ZP_SCRATCH_REG
jsr COS
ldx P8ZP_SCRATCH_REG
rts
.pend
func_tan_stack .proc
jsr func_tan_fac1
jmp push_fac1
.pend
func_tan_fac1 .proc
jsr MOVFM
stx P8ZP_SCRATCH_REG
jsr TAN
ldx P8ZP_SCRATCH_REG
rts
.pend
func_rad_stack .proc
jsr func_rad_fac1
jmp push_fac1
.pend
func_rad_fac1 .proc
; -- convert degrees to radians (d * pi / 180)
jsr MOVFM
stx P8ZP_SCRATCH_REG
lda #<_pi_div_180
ldy #>_pi_div_180
jsr FMULT
ldx P8ZP_SCRATCH_REG
rts
_pi_div_180 .byte 123, 14, 250, 53, 18 ; pi / 180
.pend
func_deg_stack .proc
jsr func_deg_fac1
jmp push_fac1
.pend
func_deg_fac1 .proc
; -- convert radians to degrees (d * (1/ pi * 180))
jsr MOVFM
stx P8ZP_SCRATCH_REG
lda #<_one_over_pi_div_180
ldy #>_one_over_pi_div_180
jsr FMULT
ldx P8ZP_SCRATCH_REG
rts
_one_over_pi_div_180 .byte 134, 101, 46, 224, 211 ; 1 / (pi * 180)
.pend
func_ln_stack .proc
jsr func_ln_fac1
jmp push_fac1
.pend
func_ln_fac1 .proc
jsr MOVFM
stx P8ZP_SCRATCH_REG
jsr LOG
ldx P8ZP_SCRATCH_REG
rts
.pend
func_log2_stack .proc
jsr func_log2_fac1
jmp push_fac1
.pend
func_log2_fac1 .proc
jsr MOVFM
stx P8ZP_SCRATCH_REG
jsr LOG
jsr MOVEF
lda #<FL_LOG2_const
ldy #>FL_LOG2_const
jsr MOVFM
jsr FDIVT
ldx P8ZP_SCRATCH_REG
rts
.pend
func_sign_f_stack .proc
jsr func_sign_f_into_A
sta P8ESTACK_LO,x
dex
rts
.pend
func_sign_f_into_A .proc
jsr MOVFM
jmp SIGN
.pend
func_sqrt_stack .proc
jsr func_sqrt_fac1
jmp push_fac1
.pend
func_sqrt_fac1 .proc
jsr MOVFM
stx P8ZP_SCRATCH_REG
jsr SQR
ldx P8ZP_SCRATCH_REG
rts
.pend
func_rndf_stack .proc
jsr func_rndf_fac1
jmp push_fac1
.pend
func_rndf_fac1 .proc
stx P8ZP_SCRATCH_REG
lda #1
jsr FREADSA
jsr RND ; rng into fac1
ldx P8ZP_SCRATCH_REG
rts
.pend
func_swap_f .proc
; -- swap floats pointed to by SCRATCH_ZPWORD1, SCRATCH_ZPWORD2
ldy #4
- lda (P8ZP_SCRATCH_W1),y
pha
lda (P8ZP_SCRATCH_W2),y
sta (P8ZP_SCRATCH_W1),y
pla
sta (P8ZP_SCRATCH_W2),y
dey
bpl -
rts
.pend
func_reverse_f .proc
; --- reverse an array of floats (array in P8ZP_SCRATCH_W1, num elements in A)
_left_index = P8ZP_SCRATCH_W2
_right_index = P8ZP_SCRATCH_W2+1
_loop_count = P8ZP_SCRATCH_REG
pha
jsr a_times_5
sec
sbc #5
sta _right_index
lda #0
sta _left_index
pla
lsr a
sta _loop_count
_loop ; push the left indexed float on the stack
ldy _left_index
lda (P8ZP_SCRATCH_W1),y
pha
iny
lda (P8ZP_SCRATCH_W1),y
pha
iny
lda (P8ZP_SCRATCH_W1),y
pha
iny
lda (P8ZP_SCRATCH_W1),y
pha
iny
lda (P8ZP_SCRATCH_W1),y
pha
; copy right index float to left index float
ldy _right_index
lda (P8ZP_SCRATCH_W1),y
ldy _left_index
sta (P8ZP_SCRATCH_W1),y
inc _left_index
inc _right_index
ldy _right_index
lda (P8ZP_SCRATCH_W1),y
ldy _left_index
sta (P8ZP_SCRATCH_W1),y
inc _left_index
inc _right_index
ldy _right_index
lda (P8ZP_SCRATCH_W1),y
ldy _left_index
sta (P8ZP_SCRATCH_W1),y
inc _left_index
inc _right_index
ldy _right_index
lda (P8ZP_SCRATCH_W1),y
ldy _left_index
sta (P8ZP_SCRATCH_W1),y
inc _left_index
inc _right_index
ldy _right_index
lda (P8ZP_SCRATCH_W1),y
ldy _left_index
sta (P8ZP_SCRATCH_W1),y
; pop the float off the stack into the right index float
ldy _right_index
pla
sta (P8ZP_SCRATCH_W1),y
dey
pla
sta (P8ZP_SCRATCH_W1),y
dey
pla
sta (P8ZP_SCRATCH_W1),y
dey
pla
sta (P8ZP_SCRATCH_W1),y
dey
pla
sta (P8ZP_SCRATCH_W1),y
inc _left_index
lda _right_index
sec
sbc #9
sta _right_index
dec _loop_count
bne _loop
rts
.pend
a_times_5 .proc
sta P8ZP_SCRATCH_B1
asl a
asl a
clc
adc P8ZP_SCRATCH_B1
rts
.pend
func_any_f_into_A .proc
jsr a_times_5
jmp prog8_lib.func_any_b_into_A
.pend
func_all_f_into_A .proc
jsr a_times_5
jmp prog8_lib.func_all_b_into_A
.pend
func_any_f_stack .proc
jsr a_times_5
jmp prog8_lib.func_any_b_stack
.pend
func_all_f_stack .proc
jsr a_times_5
jmp prog8_lib.func_all_b_stack
.pend
func_max_f_stack .proc
jsr func_max_f_fac1
jmp push_fac1
.pend
func_max_f_fac1 .proc
; -- max(array) -> fac1, array in P8ZP_SCRATCH_W1, num elts in A
_loop_count = P8ZP_SCRATCH_REG
stx floats_store_reg
sta _loop_count
lda #255
sta _minmax_cmp+1 ; modifying
lda #<_largest_neg_float
ldy #>_largest_neg_float
_minmax_entry jsr MOVFM
- lda P8ZP_SCRATCH_W1
ldy P8ZP_SCRATCH_W1+1
jsr FCOMP
_minmax_cmp cmp #255 ; modified
bne +
lda P8ZP_SCRATCH_W1
ldy P8ZP_SCRATCH_W1+1
jsr MOVFM
+ lda P8ZP_SCRATCH_W1
clc
adc #5
sta P8ZP_SCRATCH_W1
bcc +
inc P8ZP_SCRATCH_W1+1
+ dec _loop_count
bne -
ldx floats_store_reg
rts
_largest_neg_float .byte 255,255,255,255,255 ; largest negative float -1.7014118345e+38
.pend
func_min_f_stack .proc
jsr func_min_f_fac1
jmp push_fac1
.pend
func_min_f_fac1 .proc
; -- min(array) -> fac1, array in P8ZP_SCRATCH_W1, num elts in A
sta func_max_f_fac1._loop_count
lda #1
sta func_max_f_fac1._minmax_cmp+1
lda #<_largest_pos_float
ldy #>_largest_pos_float
jmp func_max_f_fac1._minmax_entry
_largest_pos_float .byte 255,127,255,255,255 ; largest positive float
rts
.pend
func_sum_f_stack .proc
jsr func_sum_f_fac1
jmp push_fac1
.pend
func_sum_f_fac1 .proc
; -- sum(array) -> fac1, array in P8ZP_SCRATCH_W1, num elts in A
_loop_count = P8ZP_SCRATCH_REG
stx floats_store_reg
sta _loop_count
lda #<FL_ZERO_const
ldy #>FL_ZERO_const
jsr MOVFM
- lda P8ZP_SCRATCH_W1
ldy P8ZP_SCRATCH_W1+1
jsr FADD
lda P8ZP_SCRATCH_W1
clc
adc #5
sta P8ZP_SCRATCH_W1
bcc +
inc P8ZP_SCRATCH_W1+1
+ dec _loop_count
bne -
ldx floats_store_reg
rts
.pend
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