;**********************************************************************
;FAST 8 BIT SQUARE ROOT
;
;Author: Nikolai Golovchenko <golovchenko@mail.ru>
;Date: February 15, 2000
;
;Input and output in w
;ROM - 53
;RAM - 0
;Timing - 15..19 cycles including call and return
;**********************************************************************
Sqrt8f
addlw -64 ;1
skpnc
goto sqrt8_15 ;3
addlw (64-16)
skpnc
goto sqrt4_7 ;6
addlw (16-4)
skpnc
goto sqrt2_3 ;9
addlw (4-1)
skpnc
retlw 1 ;1 (15)
retlw 0 ;0 (16)
sqrt2_3
addlw (4-9)
skpnc
retlw 3 ;3 (16)
retlw 2 ;2 (17)
sqrt4_7
addlw (16-36)
skpnc
goto sqrt6_7 ;10
addlw (36-25)
skpnc
retlw 5 ;5 (16)
retlw 4 ;4 (17)
sqrt6_7
addlw (36-49)
skpnc
retlw 7 ;7 (17)
retlw 6 ;6 (18)
sqrt8_15
addlw (64-144)
skpnc
goto sqrt12_15 ;7
addlw (144-100)
skpnc
goto sqrt10_11 ;10
addlw (100-81)
skpnc
retlw 9 ;9 (16)
retlw 8 ;8 (17)
sqrt10_11
addlw (100-121)
skpnc
retlw 11 ;11 (17)
retlw 10 ;10 (18)
sqrt12_15
addlw (144-196)
skpnc
goto sqrt14_15 ;11
addlw (196-169)
skpnc
retlw 13 ;13 (17)
retlw 12 ;12 (18)
sqrt14_15
addlw (196-225)
skpnc
retlw 15 ;15 (18)
retlw 14 ;14 (19)
;**********************************************************************
Questions:
| file: /Techref/microchip/math/sqrt/sqrt8fast.htm, 2KB, , updated: 2004/12/6 00:20, local time: 2024/11/25 09:31,
3.144.47.115:LOG IN
|
| ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions? <A HREF="http://techref.massmind.org/techref/microchip/math/sqrt/sqrt8fast.htm"> PIC Microcontoller Math Method Fast 8 Bit Square Root</A> |
| Did you find what you needed? |
Welcome to massmind.org! |
Welcome to techref.massmind.org! |
.