Fixed >scaled in example.

[forth.jl.git] / src / lib.4th

diff --git a/src/lib.4th b/src/lib.4th
index 781a966..ea4e7de 100644 (file)
--- a/src/lib.4th
+++ b/src/lib.4th
@@ -1,6 +1,6 @@
 : / /MOD SWAP DROP ;
 : MOD /MOD DROP ;
-: */ * / ;
+: */ -ROT * SWAP / ;
 
 : NEGATE 0 SWAP - ;
 
@@ -116,6 +116,8 @@
 
 : I RSP@ 3 - @ ;
 
+: J RSP@ 6 - @ ;
+
 : ?LEAVE IMMEDIATE
         ' 0BRANCH , 13 ,
         ' R> , ' RDROP , ' RDROP ,
@@ -170,10 +172,6 @@
         @               ( and fetch )
 ;
 
-: ROLL ( x_u x_u-1... x_0 u -- x_u-1 ... x_0 x_u )
-        1+ DUP PICK SWAP    ( x_u x_u-1 ... x_0 x_u u+1 )
-;
-
 ( With the looping constructs, we can now write SPACES, which writes n spaces to stdout. )
 : SPACES        ( n -- )
         0 DO
@@ -316,3 +314,13 @@
         THEN
 ;
 
+: ROLL ( x_u x_u-1... x_0 u -- x_u-1 ... x_0 x_u )
+        1+ DUP PICK SWAP    ( x_u x_u-1 ... x_0 x_u u+1 )
+        PSP@ 1- SWAP - PSP@ 2- SWAP
+        DO
+            i 1+ @ i !
+        LOOP
+        SWAP DROP
+;
+
+include ../examples/mandelbrot.4th