?? fltpr.s
字號:
/ C library-- floating output.globl pfloat.globl pscien.globl pgen.globl fltused.globl _ecvt.globl _fcvt.globl _gcvtfltused: / force loadingpgen: mov r3,-(sp) mov r0,-(sp) tst r2 bne 1f mov $6,(sp)1: movf (r4)+,fr0 movf fr0,-(sp) jsr pc,_gcvt add $8+2+2,sp1: tstb (r3)+ bne 1b dec r3 rts pcpfloat: mov $sign,-(sp) mov $decpt,-(sp) tst r2 bne 1f mov $6,r01: mov r0,-(sp) mov r0,ndigit movf (r4)+,fr0 movf fr0,-(sp) jsr pc,_fcvt add $8+2+2+2,sp tst sign beq 1f movb $'-,(r3)+1: mov decpt,r2 bgt 1f movb $'0,(r3)+1: mov r2,r1 ble 1f2: movb (r0)+,(r3)+ sob r1,2b1: mov ndigit,r1 beq 1f movb $'.,(r3)+1: neg r2 ble 1f2: dec r1 blt 1f movb $'0,(r3)+ sob r2,2b1: tst r1 ble 2f1: movb (r0)+,(r3)+ sob r1,1b2: rts pcpscien: mov $sign,-(sp) mov $decpt,-(sp) mov r0,-(sp) mov r0,ndigit tst r2 bne 1f mov $6,(sp)1: movf (r4)+,fr0 movf fr0,-(sp) jsr pc,_ecvt add $8+2+2+2,sp tst sign beq 1f movb $'-,(r3)+1: cmpb (r0),$'0 bne 1f inc decpt1: movb (r0)+,(r3)+ movb $'.,(r3)+ mov ndigit,r1 dec r1 ble 1f2: movb (r0)+,(r3)+ sob r1,2b1: movb $'e,(r3)+ mov decpt,r2 dec r2 mov r2,r1 bge 1f movb $'-,(r3)+ neg r1 br 2f1: movb $'+,(r3)+2: clr r0 div $10.,r0 add $'0,r0 movb r0,(r3)+ add $'0,r1 movb r1,(r3)+ rts pc.datasign: .=.+2ndigit: .=.+2decpt: .=.+2
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -