prog8/compiler/res/prog8lib/math.p8

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2021-01-07 00:56:31 +00:00
; Internal Math library routines - always included by the compiler
;
; Written by Irmen de Jong (irmen@razorvine.net) - license: GNU GPL 3.0
2019-07-29 21:11:13 +00:00
math {
%asminclude "library:math.asm"
asmsub sin8u(ubyte angle @A) clobbers(Y) -> ubyte @A {
%asm {{
tay
lda _sinecos8u,y
rts
_sinecos8u .byte trunc(128.0 + 127.5 * sin(range(256+64) * rad(360.0/256.0)))
}}
}
asmsub cos8u(ubyte angle @A) clobbers(Y) -> ubyte @A {
%asm {{
tay
lda sin8u._sinecos8u+64,y
rts
}}
}
asmsub sin8(ubyte angle @A) clobbers(Y) -> byte @A {
%asm {{
tay
lda _sinecos8,y
rts
_sinecos8 .char trunc(127.0 * sin(range(256+64) * rad(360.0/256.0)))
}}
}
asmsub cos8(ubyte angle @A) clobbers(Y) -> byte @A {
%asm {{
tay
lda sin8._sinecos8+64,y
rts
}}
}
asmsub sin16(ubyte angle @A) -> word @AY {
%asm {{
tay
lda _sinecos8lo,y
pha
lda _sinecos8hi,y
tay
pla
rts
_ := trunc(32767.0 * sin(range(256+64) * rad(360.0/256.0)))
_sinecos8lo .byte <_
_sinecos8hi .byte >_
}}
}
asmsub cos16(ubyte angle @A) -> word @AY {
%asm {{
tay
lda sin16._sinecos8lo+64,y
pha
lda sin16._sinecos8hi+64,y
tay
pla
rts
}}
}
asmsub sin16u(ubyte angle @A) -> uword @AY {
%asm {{
tay
lda _sinecos8ulo,y
pha
lda _sinecos8uhi,y
tay
pla
rts
_ := trunc(32768.0 + 32767.5 * sin(range(256+64) * rad(360.0/256.0)))
_sinecos8ulo .byte <_
_sinecos8uhi .byte >_
}}
}
asmsub cos16u(ubyte angle @A) -> uword @AY {
%asm {{
tay
lda sin16u._sinecos8ulo+64,y
pha
lda sin16u._sinecos8uhi+64,y
tay
pla
rts
}}
}
asmsub sinr8u(ubyte radians @A) clobbers(Y) -> ubyte @A {
%asm {{
tay
lda _sinecosR8u,y
rts
_sinecosR8u .byte trunc(128.0 + 127.5 * sin(range(180+45) * rad(360.0/180.0)))
}}
}
asmsub cosr8u(ubyte radians @A) clobbers(Y) -> ubyte @A {
%asm {{
tay
lda sinr8u._sinecosR8u+45,y
rts
}}
}
asmsub sinr8(ubyte radians @A) clobbers(Y) -> byte @A {
%asm {{
tay
lda _sinecosR8,y
rts
_sinecosR8 .char trunc(127.0 * sin(range(180+45) * rad(360.0/180.0)))
}}
}
asmsub cosr8(ubyte radians @A) clobbers(Y) -> byte @A {
%asm {{
tay
lda sinr8._sinecosR8+45,y
rts
}}
}
asmsub sinr16(ubyte radians @A) -> word @AY {
%asm {{
tay
lda _sinecosR8lo,y
pha
lda _sinecosR8hi,y
tay
pla
rts
_ := trunc(32767.0 * sin(range(180+45) * rad(360.0/180.0)))
_sinecosR8lo .byte <_
_sinecosR8hi .byte >_
}}
}
asmsub cosr16(ubyte radians @A) -> word @AY {
%asm {{
tay
lda sinr16._sinecosR8lo+45,y
pha
lda sinr16._sinecosR8hi+45,y
tay
pla
rts
}}
}
asmsub sinr16u(ubyte radians @A) -> uword @AY {
%asm {{
tay
lda _sinecosR8ulo,y
pha
lda _sinecosR8uhi,y
tay
pla
rts
_ := trunc(32768.0 + 32767.5 * sin(range(180+45) * rad(360.0/180.0)))
_sinecosR8ulo .byte <_
_sinecosR8uhi .byte >_
}}
}
asmsub cosr16u(ubyte radians @A) -> uword @AY {
%asm {{
tay
lda sinr16u._sinecosR8ulo+45,y
pha
lda sinr16u._sinecosR8uhi+45,y
tay
pla
rts
}}
}
}