ORCALib/math2.macros
Stephen Heumann 98cfd4e831 Add floating-point number classification functions.
These are the internal routines used by the fpclassify() macro.
2021-03-08 23:44:44 -06:00

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MACRO
&lab csubroutine &parms,&work
&lab anop
aif c:&work,.a
lclc &work
&work setc 0
.a
gbla &totallen
gbla &worklen
&worklen seta &work
&totallen seta 0
aif c:&parms=0,.e
lclc &len
lclc &p
lcla &i
&i seta 1
.b
&p setc &parms(&i)
&len amid &p,2,1
aif "&len"=":",.c
&len amid &p,1,2
&p amid &p,4,l:&p-3
ago .d
.c
&len amid &p,1,1
&p amid &p,3,l:&p-2
.d
&p equ &totallen+4+&work
&totallen seta &totallen+&len
&i seta &i+1
aif &i<=c:&parms,^b
.e
tsc
aif &work=0,.f
sec
sbc #&work
tcs
.f
phd
tcd
mend
MACRO
&lab creturn &r
&lab anop
lclc &len
aif c:&r,.a
lclc &r
&r setc 0
&len setc 0
ago .h
.a
&len amid &r,2,1
aif "&len"=":",.b
&len amid &r,1,2
&r amid &r,4,l:&r-3
ago .c
.b
&len amid &r,1,1
&r amid &r,3,l:&r-2
.c
aif &len<>2,.d
ldy &r
ago .h
.d
aif &len<>4,.e
ldx &r+2
ldy &r
ago .h
.e
aif &len<>10,.g
ldy #&r
ldx #^&r
ago .h
.g
mnote 'Not a valid return length',16
mexit
.h
aif &totallen=0,.i
lda &worklen+2
sta &worklen+&totallen+2
lda &worklen+1
sta &worklen+&totallen+1
.i
pld
tsc
clc
adc #&worklen+&totallen
tcs
aif &len=0,.j
tya
.j
rtl
mend
MACRO
&LAB FCLASSS
&LAB PEA $021C
LDX #$090A
JSL $E10000
MEND
MACRO
&LAB FCLASSD
&LAB PEA $011C
LDX #$090A
JSL $E10000
MEND
MACRO
&LAB FCLASSX
&LAB PEA $001C
LDX #$090A
JSL $E10000
MEND
MACRO
&LAB FX2S
&LAB PEA $0210
LDX #$090A
JSL $E10000
MEND
MACRO
&LAB FX2D
&LAB PEA $0110
LDX #$090A
JSL $E10000
MEND