Debugging number->string

[scheme.forth.jl.git] / scheme-primitives.4th

diff --git a/scheme-primitives.4th b/scheme-primitives.4th
index 3de4d37..8e83f97 100644 (file)
--- a/scheme-primitives.4th
+++ b/scheme-primitives.4th
@@ -48,6 +48,47 @@
     car primitive-type istype? -rot 2drop boolean-type
 ; make-primitive procedure?
 
+( = Type conversions = )
+
+:noname ( args -- fixnum )
+    2dup 1 ensure-arg-count
+    car character-type ensure-arg-type
+
+    drop fixnum-type
+; make-primitive char->integer
+
+:noname ( args -- char )
+    2dup 1 ensure-arg-count
+    car fixnum-type ensure-arg-type
+
+    drop character-type
+; make-primitive integer->char
+
+: build-fixnum-charlist ( num )
+    dup 0= if
+        nil
+    else
+        dup 10 / recurse
+        rot 10 mod [char] 0 + character-type 2swap
+        cons
+    then
+;
+:noname ( args -- string )
+    2dup 1 ensure-arg-count
+    car fixnum-type ensure-arg-type
+
+    drop
+
+    dup 0< swap abs ( bool num )
+    build-fixnum-charlist
+    rot drop
+    rot if
+        [char] - character-type 2swap cons
+    then
+
+    drop string-type
+; make-primitive number->string
+
 ( = Arithmeic = )
 
 : add-prim ( args -- fixnum )