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no locals in bit-arrays

db4
Doug Coleman 2009-02-10 17:25:02 -06:00
parent c2e6ef0366
commit cf99c7afd1
1 changed files with 10 additions and 11 deletions
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21
basis/bit-arrays/bit-arrays.factor
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@ -1,7 +1,7 @@
! Copyright (C) 2007, 2008 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: alien.c-types accessors math alien.accessors kernel
kernel.private locals sequences sequences.private byte-arrays
kernel.private sequences sequences.private byte-arrays
parser prettyprint.custom fry ;
IN: bit-arrays
@ -70,16 +70,15 @@ M: bit-array byte-length length 7 + -3 shift ;
: ?{ \ } [ >bit-array ] parse-literal ; parsing
:: integer>bit-array ( n -- bit-array )
n zero? [ 0 <bit-array> ] [
[let | out [ n log2 1+ <bit-array> ] i! [ 0 ] n'! [ n ] |
[ n' zero? ] [
n' out underlying>> i set-alien-unsigned-1
n' -8 shift n'!
i 1+ i!
] [ ] until
out
]
: integer>bit-array ( n -- bit-array )
dup 0 = [
<bit-array>
] [
[ log2 1+ <bit-array> 0 ] keep
[ dup 0 = ] [
[ pick underlying>> pick set-alien-unsigned-1 ] keep
[ 1+ ] [ -8 shift ] bi*
] [ ] until 2drop
] if ;
: bit-array>integer ( bit-array -- n )