Fixed bug in (mod 3 5/6).

scheme/ikarus.numerics.ss

@@ -2776,9 +2776,14 @@
           [(or (fixnum? x) (bignum? x)) 
            (values x 0)]
           [else
-           (let-values ([(a b)
-                         (int-div-and-mod (numerator x) (denominator x))])
-             (values a (/ b m)))])))
+           (let ([n0 (numerator x)] [d0 (denominator x)])
+             (let ([q (quotient n0 d0)]) 
+               (let ([r (- n (* q m))])
+                 (if (>= r 0)
+                     (values q r)
+                     (if (> m 0)
+                         (values (- q 1) (+ r m))
+                         (values (+ q 1) (- r m)))))))])))
     (cond
       [(fixnum? m) 
        (cond

scheme/last-revision

@@ -1 +1 @@
-1416
+1418

scheme/tests/div-and-mod.ss

@@ -28,7 +28,22 @@
     (test +10 +4)
     (test +10 -4)
     (test -10 +4)
-    (test -10 -4))
+    (test -10 -4)
+    
+    (test +3 +5/6)
+    (test -3 +5/6)
+    (test +3 -5/6)
+    (test -3 -5/6)
+
+    (test +3 +7/11)
+    (test -3 +7/11)
+    (test +3 -7/11)
+    (test -3 -7/11)
+
+
+
+
+    )
   
 
   (define (test-div0-and-mod0)

src/ikarus-io.c

@@ -32,9 +32,9 @@
 ikptr 
 ikrt_io_error(){
   int err = errno;
-#if 0
+//#if 0
   fprintf(stderr, "errno=%d %s\n", err, strerror(err));
-#endif
+//#endif
   switch(err){
     case EBADF           : return fix(-2);
     case EINTR           : return fix(-3);