7.1.4浮点数代数值比较.txt

里面有好多的原码,大家都来下载.用asm编写的

FLTCMP: 
MOV 	A,@R0 				
XRL 	A,@R1
JNB 		ACC.7,CMP2
MOV 	A,@R0 				
RLC 	A
MOV 	A,#0FFH
RET 
CMP2: 
MOV 	A,@R1 				
MOV 	C,ACC.6
MOV 	ACC.7,C
MOV 	B,A
MOV 	A,@R0
MOV 	C,ACC.7
MOV 	F0,C 				
MOV 	C,ACC.6
MOV 	ACC.7,C
CLR 	C 					
SUBB 	A,B
JZ 		CMP6
RLC 	A 					
JNB 		F0,CMP5
CPL 		C 					
CMP5: 
MOV 	A,#0FFH 				
RET 
CMP6: 
INC 		R0 					
INC 		R0
INC 		R1
INC 		R1
CLR 	C
MOV 	A,@R0
SUBB 	A,@R1
MOV 	B,A 					
DEC 	R0
DEC 	R1
MOV 	A,@R0
SUBB 	A,@R1
DEC 	R0
DEC 	R1
ORL 	A,B 					
JZ 		CMP7
JNB 		F0,CMP7
CPL 		C 					
CMP7: 
RET