mirror of
https://github.com/irmen/prog8.git
synced 2024-11-26 11:49:22 +00:00
restore tweaks in c64flt.p8
This commit is contained in:
Irmen de Jong
parent
5e3e00fbad
commit
ce8853ab50
@ -9,11 +9,11 @@
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~ c64flt {
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; ---- this block contains C-64 floating point related functions ----
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const float PI = 3.141592653589793
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const float TWOPI = 6.283185307179586
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; ---- C64 basic and kernal ROM float constants and functions ----
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; note: the fac1 and fac2 are working registers and take 6 bytes each,
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@ -34,6 +34,7 @@
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memory float FL_PIHALF = $e2e0 ; PI / 2
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memory float FL_TWOPI = $e2e5 ; 2 * PI
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memory float FL_FR4 = $e2ea ; .25
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float FL_ZERO = 0.0 ; oddly enough 0.0 isn't available in the kernel
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; note: fac1/2 might get clobbered even if not mentioned in the function's name.
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@ -165,14 +166,14 @@ asmsub GIVAYFAY (uword value @ AY) -> clobbers(A,X,Y) -> () {
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sta c64.SCRATCH_ZPREG
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tya
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ldy c64.SCRATCH_ZPREG
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jmp c64flt.GIVAYF ; this uses the inverse order, Y/A
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jmp GIVAYF ; this uses the inverse order, Y/A
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}}
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}
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asmsub FTOSWRDAY () -> clobbers(X) -> (uword @ AY) {
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; ---- fac1 to signed word in A/Y
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%asm {{
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jsr c64flt.FTOSWORDYA ; note the inverse Y/A order
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jsr FTOSWORDYA ; note the inverse Y/A order
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sta c64.SCRATCH_ZPREG
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tya
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ldy c64.SCRATCH_ZPREG
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@ -183,7 +184,7 @@ asmsub FTOSWRDAY () -> clobbers(X) -> (uword @ AY) {
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asmsub GETADRAY () -> clobbers(X) -> (uword @ AY) {
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; ---- fac1 to unsigned word in A/Y
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%asm {{
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jsr c64flt.GETADR ; this uses the inverse order, Y/A
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jsr GETADR ; this uses the inverse order, Y/A
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sta c64.SCRATCH_ZPB1
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tya
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ldy c64.SCRATCH_ZPB1
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@ -192,13 +193,13 @@ asmsub GETADRAY () -> clobbers(X) -> (uword @ AY) {
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}
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sub print_f (float value) {
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; ---- prints the floating point value (without a newline) using basic rom routines.
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; ---- prints the floating point value (without a newline) using basic rom routines.
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%asm {{
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stx c64.SCRATCH_ZPREGX
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lda #<print_f_value
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ldy #>print_f_value
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jsr c64flt.MOVFM ; load float into fac1
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jsr c64flt.FOUT ; fac1 to string in A/Y
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jsr MOVFM ; load float into fac1
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jsr FOUT ; fac1 to string in A/Y
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jsr c64.STROUT ; print string in A/Y
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ldx c64.SCRATCH_ZPREGX
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rts
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@ -211,12 +212,12 @@ sub print_fln (float value) {
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stx c64.SCRATCH_ZPREGX
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lda #<print_fln_value
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ldy #>print_fln_value
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jsr c64flt.MOVFM ; load float into fac1
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jsr c64flt.FPRINTLN ; print fac1 with newline
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jsr MOVFM ; load float into fac1
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jsr FPRINTLN ; print fac1 with newline
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ldx c64.SCRATCH_ZPREGX
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rts
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}}
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}
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@ -229,10 +230,10 @@ ub2float .proc
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sta c64.SCRATCH_ZPWORD2
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sty c64.SCRATCH_ZPWORD2+1
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ldy c64.SCRATCH_ZPB1
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jsr c64flt.FREADUY
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jsr FREADUY
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_fac_to_mem ldx c64.SCRATCH_ZPWORD2
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ldy c64.SCRATCH_ZPWORD2+1
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jsr c64flt.MOVMF
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jsr MOVMF
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ldx c64.SCRATCH_ZPREGX
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rts
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.pend
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@ -244,7 +245,7 @@ b2float .proc
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sta c64.SCRATCH_ZPWORD2
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sty c64.SCRATCH_ZPWORD2+1
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lda c64.SCRATCH_ZPB1
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jsr c64flt.FREADSA
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jsr FREADSA
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jmp ub2float._fac_to_mem
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.pend
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@ -255,7 +256,7 @@ uw2float .proc
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sty c64.SCRATCH_ZPWORD2+1
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lda c64.SCRATCH_ZPWORD1
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ldy c64.SCRATCH_ZPWORD1+1
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jsr c64flt.GIVUAYFAY
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jsr GIVUAYFAY
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jmp ub2float._fac_to_mem
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.pend
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@ -266,26 +267,26 @@ w2float .proc
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sty c64.SCRATCH_ZPWORD2+1
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ldy c64.SCRATCH_ZPWORD1
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lda c64.SCRATCH_ZPWORD1+1
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jsr c64flt.GIVAYF
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jsr GIVAYF
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jmp ub2float._fac_to_mem
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.pend
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stack_b2float .proc
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; -- b2float operating on the stack
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inx
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lda c64.ESTACK_LO,x
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stx c64.SCRATCH_ZPREGX
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jsr c64flt.FREADSA
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jsr FREADSA
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jmp push_fac1_as_result
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.pend
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stack_w2float .proc
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; -- w2float operating on the stack
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inx
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ldy c64.ESTACK_LO,x
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lda c64.ESTACK_HI,x
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stx c64.SCRATCH_ZPREGX
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jsr c64flt.GIVAYF
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jsr GIVAYF
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jmp push_fac1_as_result
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.pend
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@ -295,7 +296,7 @@ stack_ub2float .proc
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lda c64.ESTACK_LO,x
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stx c64.SCRATCH_ZPREGX
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tay
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jsr c64flt.FREADUY
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jsr FREADUY
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jmp push_fac1_as_result
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.pend
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@ -305,14 +306,14 @@ stack_uw2float .proc
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lda c64.ESTACK_LO,x
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ldy c64.ESTACK_HI,x
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stx c64.SCRATCH_ZPREGX
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jsr c64flt.GIVUAYFAY
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jsr GIVUAYFAY
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jmp push_fac1_as_result
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.pend
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stack_float2w .proc
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stack_float2w .proc
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jsr pop_float_fac1
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stx c64.SCRATCH_ZPREGX
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jsr c64flt.AYINT
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jsr AYINT
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ldx c64.SCRATCH_ZPREGX
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lda $64
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sta c64.ESTACK_HI,x
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@ -321,11 +322,11 @@ stack_float2w .proc
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dex
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rts
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.pend
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stack_float2uw .proc
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stack_float2uw .proc
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jsr pop_float_fac1
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stx c64.SCRATCH_ZPREGX
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jsr c64flt.GETADR
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jsr GETADR
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ldx c64.SCRATCH_ZPREGX
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sta c64.ESTACK_HI,x
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tya
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@ -335,7 +336,7 @@ stack_float2uw .proc
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.pend
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push_float .proc
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; ---- push mflpt5 in A/Y onto stack
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; ---- push mflpt5 in A/Y onto stack
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; (taking 3 stack positions = 6 bytes of which 1 is padding)
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sta c64.SCRATCH_ZPWORD1
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sty c64.SCRATCH_ZPWORD1+1
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@ -359,23 +360,23 @@ push_float .proc
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dex
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rts
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.pend
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func_rndf .proc
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; -- put a random floating point value on the stack
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stx c64.SCRATCH_ZPREG
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lda #1
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jsr c64flt.FREADSA
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jsr c64flt.RND ; rng into fac1
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jsr FREADSA
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jsr RND ; rng into fac1
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ldx #<_rndf_rnum5
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ldy #>_rndf_rnum5
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jsr c64flt.MOVMF ; fac1 to mem X/Y
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jsr MOVMF ; fac1 to mem X/Y
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ldx c64.SCRATCH_ZPREG
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lda #<_rndf_rnum5
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ldy #>_rndf_rnum5
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jmp push_float
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_rndf_rnum5 .byte 0,0,0,0,0
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.pend
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push_float_from_indexed_var .proc
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; -- push the float from the array at A/Y with index on stack, onto the stack.
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sta c64.SCRATCH_ZPWORD1
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@ -412,7 +413,7 @@ pop_float .proc
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sta (c64.SCRATCH_ZPWORD1),y
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rts
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.pend
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pop_float_fac1 .proc
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; -- pops float from stack into FAC1
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lda #<fmath_float1
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@ -420,9 +421,9 @@ pop_float_fac1 .proc
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jsr pop_float
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lda #<fmath_float1
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ldy #>fmath_float1
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jmp c64flt.MOVFM
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jmp MOVFM
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.pend
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pop_float_to_indexed_var .proc
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; -- pop the float on the stack, to the memory in the array at A/Y indexed by the byte on stack
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sta c64.SCRATCH_ZPWORD1
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@ -435,7 +436,7 @@ pop_float_to_indexed_var .proc
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.pend
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copy_float .proc
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; -- copies the 5 bytes of the mflt value pointed to by SCRATCH_ZPWORD1,
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; -- copies the 5 bytes of the mflt value pointed to by SCRATCH_ZPWORD1,
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; into the 5 bytes pointed to by A/Y. Clobbers A,Y.
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sta c64.SCRATCH_ZPWORD2
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sty c64.SCRATCH_ZPWORD2+1
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@ -462,17 +463,17 @@ inc_var_f .proc
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sta c64.SCRATCH_ZPWORD1
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sty c64.SCRATCH_ZPWORD1+1
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stx c64.SCRATCH_ZPREGX
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jsr c64flt.MOVFM
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jsr MOVFM
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lda #<FL_FONE
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ldy #>FL_FONE
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jsr c64flt.FADD
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jsr FADD
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ldx c64.SCRATCH_ZPWORD1
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ldy c64.SCRATCH_ZPWORD1+1
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jsr c64flt.MOVMF
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jsr MOVMF
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ldx c64.SCRATCH_ZPREGX
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rts
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.pend
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dec_var_f .proc
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; -- subtract 1 from float pointed to by A/Y
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sta c64.SCRATCH_ZPWORD1
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@ -480,17 +481,17 @@ dec_var_f .proc
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stx c64.SCRATCH_ZPREGX
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lda #<FL_FONE
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ldy #>FL_FONE
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jsr c64flt.MOVFM
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jsr MOVFM
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lda c64.SCRATCH_ZPWORD1
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ldy c64.SCRATCH_ZPWORD1+1
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jsr c64flt.FSUB
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jsr FSUB
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ldx c64.SCRATCH_ZPWORD1
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ldy c64.SCRATCH_ZPWORD1+1
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jsr c64flt.MOVMF
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jsr MOVMF
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ldx c64.SCRATCH_ZPREGX
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rts
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.pend
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inc_indexed_var_f .proc
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; -- add 1 to float in array pointed to by A/Y, at index X
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pha
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@ -508,7 +509,7 @@ inc_indexed_var_f .proc
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iny
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+ jmp inc_var_f
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.pend
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dec_indexed_var_f .proc
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; -- subtract 1 to float in array pointed to by A/Y, at index X
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pha
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@ -526,7 +527,7 @@ dec_indexed_var_f .proc
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iny
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+ jmp dec_var_f
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.pend
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pop_2_floats_f2_in_fac1 .proc
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; -- pop 2 floats from stack, load the second one in FAC1 as well
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@ -538,7 +539,7 @@ pop_2_floats_f2_in_fac1 .proc
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jsr pop_float
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lda #<fmath_float2
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ldy #>fmath_float2
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jmp c64flt.MOVFM
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jmp MOVFM
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.pend
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@ -549,13 +550,13 @@ push_fac1_as_result .proc
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; -- push the float in FAC1 onto the stack, and return from calculation
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ldx #<fmath_float1
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ldy #>fmath_float1
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jsr c64flt.MOVMF
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jsr MOVMF
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lda #<fmath_float1
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ldy #>fmath_float1
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ldx c64.SCRATCH_ZPREGX
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jmp push_float
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.pend
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pow_f .proc
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; -- push f1 ** f2 on stack
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lda #<fmath_float2
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@ -567,21 +568,21 @@ pow_f .proc
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stx c64.SCRATCH_ZPREGX
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lda #<fmath_float1
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ldy #>fmath_float1
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jsr c64flt.CONUPK ; fac2 = float1
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jsr CONUPK ; fac2 = float1
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lda #<fmath_float2
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ldy #>fmath_float2
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jsr c64flt.FPWR
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jsr FPWR
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ldx c64.SCRATCH_ZPREGX
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jmp push_fac1_as_result
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.pend
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div_f .proc
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; -- push f1/f2 on stack
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jsr pop_2_floats_f2_in_fac1
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stx c64.SCRATCH_ZPREGX
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lda #<fmath_float1
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ldy #>fmath_float1
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jsr c64flt.FDIV
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jsr FDIV
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jmp push_fac1_as_result
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.pend
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@ -591,7 +592,7 @@ add_f .proc
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stx c64.SCRATCH_ZPREGX
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lda #<fmath_float1
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ldy #>fmath_float1
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jsr c64flt.FADD
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jsr FADD
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jmp push_fac1_as_result
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.pend
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@ -601,7 +602,7 @@ sub_f .proc
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stx c64.SCRATCH_ZPREGX
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lda #<fmath_float1
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ldy #>fmath_float1
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jsr c64flt.FSUB
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jsr FSUB
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jmp push_fac1_as_result
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.pend
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@ -611,15 +612,15 @@ mul_f .proc
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stx c64.SCRATCH_ZPREGX
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lda #<fmath_float1
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ldy #>fmath_float1
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jsr c64flt.FMULT
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jsr FMULT
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jmp push_fac1_as_result
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.pend
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neg_f .proc
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; -- push -flt back on stack
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jsr pop_float_fac1
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stx c64.SCRATCH_ZPREGX
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jsr c64flt.NEGOP
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jsr NEGOP
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jmp push_fac1_as_result
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.pend
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@ -627,7 +628,7 @@ abs_f .proc
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; -- push abs(float) on stack (as float)
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jsr pop_float_fac1
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stx c64.SCRATCH_ZPREGX
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jsr c64flt.ABS
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jsr ABS
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jmp push_fac1_as_result
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.pend
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@ -657,7 +658,7 @@ _equals_store inx
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sta c64.ESTACK_LO+1,x
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rts
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_equals_false lda #0
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beq _equals_store
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beq _equals_store
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.pend
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notequal_f .proc
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@ -675,7 +676,7 @@ less_f .proc
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beq compare_floats._return_true
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bne compare_floats._return_false
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.pend
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lesseq_f .proc
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; -- is f1 <= f2?
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@ -714,11 +715,11 @@ compare_floats .proc
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jsr pop_float
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lda #<fmath_float1
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ldy #>fmath_float1
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jsr c64flt.MOVFM ; fac1 = flt1
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jsr MOVFM ; fac1 = flt1
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lda #<fmath_float2
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ldy #>fmath_float2
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stx c64.SCRATCH_ZPREG
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jsr c64flt.FCOMP ; A = flt1 compared with flt2 (0=equal, 1=flt1>flt2, 255=flt1<flt2)
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jsr FCOMP ; A = flt1 compared with flt2 (0=equal, 1=flt1>flt2, 255=flt1<flt2)
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ldx c64.SCRATCH_ZPREG
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rts
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_return_false lda #0
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@ -727,13 +728,13 @@ _return_result sta c64.ESTACK_LO,x
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rts
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_return_true lda #1
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bne _return_result
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.pend
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.pend
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func_sin .proc
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; -- push sin(f) back onto stack
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jsr pop_float_fac1
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stx c64.SCRATCH_ZPREGX
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jsr c64flt.SIN
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jsr SIN
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jmp push_fac1_as_result
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.pend
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@ -741,7 +742,7 @@ func_cos .proc
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; -- push cos(f) back onto stack
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
jsr c64flt.COS
|
||||
jsr COS
|
||||
jmp push_fac1_as_result
|
||||
.pend
|
||||
|
||||
@ -749,99 +750,99 @@ func_tan .proc
|
||||
; -- push tan(f) back onto stack
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
jsr c64flt.TAN
|
||||
jsr TAN
|
||||
jmp push_fac1_as_result
|
||||
.pend
|
||||
|
||||
|
||||
func_atan .proc
|
||||
; -- push atan(f) back onto stack
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
jsr c64flt.ATN
|
||||
jsr ATN
|
||||
jmp push_fac1_as_result
|
||||
.pend
|
||||
|
||||
|
||||
func_ln .proc
|
||||
; -- push ln(f) back onto stack
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
jsr c64flt.LOG
|
||||
jsr LOG
|
||||
jmp push_fac1_as_result
|
||||
.pend
|
||||
|
||||
|
||||
func_log2 .proc
|
||||
; -- push log base 2, ln(f)/ln(2), back onto stack
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
jsr c64flt.LOG
|
||||
jsr c64flt.MOVEF
|
||||
jsr LOG
|
||||
jsr MOVEF
|
||||
lda #<c64.FL_LOG2
|
||||
ldy #>c64.FL_LOG2
|
||||
jsr c64flt.MOVFM
|
||||
jsr c64flt.FDIVT
|
||||
jsr MOVFM
|
||||
jsr FDIVT
|
||||
jmp push_fac1_as_result
|
||||
.pend
|
||||
|
||||
|
||||
func_sqrt .proc
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
jsr c64flt.SQR
|
||||
jsr SQR
|
||||
jmp push_fac1_as_result
|
||||
.pend
|
||||
|
||||
|
||||
func_rad .proc
|
||||
; -- convert degrees to radians (d * pi / 180)
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
lda #<_pi_div_180
|
||||
ldy #>_pi_div_180
|
||||
jsr c64flt.FMULT
|
||||
jsr FMULT
|
||||
jmp push_fac1_as_result
|
||||
_pi_div_180 .byte 123, 14, 250, 53, 18 ; pi / 180
|
||||
.pend
|
||||
|
||||
|
||||
func_deg .proc
|
||||
; -- convert radians to degrees (d * (1/ pi * 180))
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
lda #<_one_over_pi_div_180
|
||||
ldy #>_one_over_pi_div_180
|
||||
jsr c64flt.FMULT
|
||||
jsr FMULT
|
||||
jmp push_fac1_as_result
|
||||
_one_over_pi_div_180 .byte 134, 101, 46, 224, 211 ; 1 / (pi * 180)
|
||||
.pend
|
||||
|
||||
|
||||
func_round .proc
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
jsr c64flt.FADDH
|
||||
jsr c64flt.INT
|
||||
jsr FADDH
|
||||
jsr INT
|
||||
jmp push_fac1_as_result
|
||||
.pend
|
||||
|
||||
|
||||
func_floor .proc
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
jsr c64flt.INT
|
||||
jsr INT
|
||||
jmp push_fac1_as_result
|
||||
.pend
|
||||
|
||||
|
||||
func_ceil .proc
|
||||
; -- ceil: tr = int(f); if tr==f -> return else return tr+1
|
||||
jsr pop_float_fac1
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr c64flt.MOVMF
|
||||
jsr c64flt.INT
|
||||
jsr MOVMF
|
||||
jsr INT
|
||||
lda #<fmath_float1
|
||||
ldy #>fmath_float1
|
||||
jsr c64flt.FCOMP
|
||||
jsr FCOMP
|
||||
cmp #0
|
||||
beq +
|
||||
lda #<FL_FONE
|
||||
ldy #>FL_FONE
|
||||
jsr c64flt.FADD
|
||||
jsr FADD
|
||||
+ jmp push_fac1_as_result
|
||||
.pend
|
||||
|
||||
@ -853,7 +854,7 @@ func_any_f .proc
|
||||
asl a
|
||||
clc
|
||||
adc c64.SCRATCH_ZPB1 ; times 5 because of float
|
||||
jmp func_any_b._entry
|
||||
jmp prog8_lib.func_any_b._entry
|
||||
.pend
|
||||
|
||||
func_all_f .proc
|
||||
@ -865,7 +866,7 @@ func_all_f .proc
|
||||
clc
|
||||
adc c64.SCRATCH_ZPB1 ; times 5 because of float
|
||||
sta _cmp_mod+1 ; self-modifying code
|
||||
jsr peek_address
|
||||
jsr prog8_lib.peek_address
|
||||
ldy #0
|
||||
- lda (c64.SCRATCH_ZPWORD1),y
|
||||
bne +
|
||||
@ -920,7 +921,7 @@ _minmax_cmp cmp #255 ; modified
|
||||
bne -
|
||||
jmp push_fac1_as_result
|
||||
rts
|
||||
_largest_neg_float .byte 255,255,255,255,255 ; largest negative float -1.7014118345e+38
|
||||
_largest_neg_float .byte 255,255,255,255,255 ; largest negative float -1.7014118345e+38
|
||||
.pend
|
||||
|
||||
func_min_f .proc
|
||||
@ -929,20 +930,20 @@ func_min_f .proc
|
||||
lda #<_largest_pos_float
|
||||
ldy #>_largest_pos_float
|
||||
jmp func_max_f._minmax_entry
|
||||
_largest_pos_float .byte 255,127,255,255,255 ; largest positive float
|
||||
_largest_pos_float .byte 255,127,255,255,255 ; largest positive float
|
||||
rts
|
||||
.pend
|
||||
|
||||
func_sum_f .proc
|
||||
lda #<c64.FL_NEGHLF
|
||||
ldy #>c64.FL_NEGHLF
|
||||
jsr c64flt.MOVFM
|
||||
jsr pop_array_and_lengthmin1Y
|
||||
lda #<FL_ZERO
|
||||
ldy #>FL_ZERO
|
||||
jsr MOVFM
|
||||
jsr prog8_lib.pop_array_and_lengthmin1Y
|
||||
stx c64.SCRATCH_ZPREGX
|
||||
- sty c64.SCRATCH_ZPREG
|
||||
lda c64.SCRATCH_ZPWORD1
|
||||
ldy c64.SCRATCH_ZPWORD1+1
|
||||
jsr c64flt.FADD
|
||||
jsr FADD
|
||||
ldy c64.SCRATCH_ZPREG
|
||||
dey
|
||||
cpy #255
|
||||
@ -954,8 +955,7 @@ func_sum_f .proc
|
||||
bcc -
|
||||
inc c64.SCRATCH_ZPWORD1+1
|
||||
bne -
|
||||
+ jsr c64flt.FADDH
|
||||
jmp push_fac1_as_result
|
||||
+ jmp push_fac1_as_result
|
||||
.pend
|
||||
}}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user