use radix literals

[factor.git] / core / io / binary / binary.factor

diff --git a/core/io/binary/binary.factor b/core/io/binary/binary.factor
index d2e50c2a6aa0fbeabe2889165b98ca7b917cd623..793fe0686ae72a846e1dcdd42746f24f855f2e7a 100644 (file)
--- a/core/io/binary/binary.factor
+++ b/core/io/binary/binary.factor
@@ -3,24 +3,31 @@
 USING: kernel math sequences ;
 IN: io.binary
 
-: le> ( seq -- x ) B{ } like byte-array>bignum >integer ;
-: be> ( seq -- x ) <reversed> le> ;
+: le> ( seq -- x ) dup length iota 0 [ 8 * shift + ] 2reduce ;
+: be> ( seq -- x ) 0 [ [ 8 shift ] dip + ] reduce ;
 
-: mask-byte ( x -- y ) HEX: ff bitand ; inline
+: mask-byte ( x -- y ) 0xff bitand ; inline
 
 : nth-byte ( x n -- b ) -8 * shift mask-byte ; inline
 
-: >le ( x n -- byte-array ) [ nth-byte ] with B{ } map-as ;
-: >be ( x n -- byte-array ) >le dup reverse-here ;
+: >le ( x n -- byte-array ) iota [ nth-byte ] with B{ } map-as ;
+: >be ( x n -- byte-array ) >le reverse! ;
 
 : d>w/w ( d -- w1 w2 )
-    [ HEX: ffffffff bitand ]
-    [ -32 shift HEX: ffffffff bitand ] bi ;
+    [ 0xffffffff bitand ]
+    [ -32 shift 0xffffffff bitand ] bi ;
 
 : w>h/h ( w -- h1 h2 )
-    [ HEX: ffff bitand ]
-    [ -16 shift HEX: ffff bitand ] bi ;
+    [ 0xffff bitand ]
+    [ -16 shift 0xffff bitand ] bi ;
 
 : h>b/b ( h -- b1 b2 )
     [ mask-byte ]
     [ -8 shift mask-byte ] bi ;
+
+: signed-le> ( bytes -- x )
+    [ le> ] [ length 8 * 1 - 2^ 1 - ] bi
+    2dup > [ bitnot bitor ] [ drop ] if ;
+
+: signed-be> ( bytes -- x )
+    <reversed> signed-le> ;