Changeset 7515:3a10b60af277

Timestamp:

12/02/07 13:31:10 (5 years ago)

Author:

William Stein <wstein@…>

Branch:

default

Message:

Fix for trac #1374

File:

• sage/matrix/matrix_modn_dense.pyx (modified) (3 diffs)

sage/matrix/matrix_modn_dense.pyx

@@ -69 +69 @@
       [ [ 0*Z(3), Z(3)^0, 0*Z(3) ], [ Z(3)^0, 0*Z(3), 0*Z(3) ], 
           [ 0*Z(3), 0*Z(3), Z(3)^0 ] ] ])
+
+TESTS:
+    sage: M = MatrixSpace(GF(5),2,2)
+    sage: A = M([1,0,0,1])
+    sage: A - int(-1)
+    [1 0]
+    [0 1]
+    sage: B = M([4,0,0,1])
+    sage: B - int(-1)
+    [4 0]
+    [0 1]
 """
 
@@ -179 +190 @@
         cdef Py_ssize_t i, j, k
         cdef mod_int *v
+        cdef mod_int p
+        p = self._base_ring.characteristic()
 
         # scalar?
@@ -191 +204 @@
             else:
                 e = entries   # coerce to an unsigned int
+                e %= p
                 if e != 0:
                     for i from 0 <= i < self._nrows: