SPecial cases for negatives to odd positive powers.

CVS patchset: 6852
CVS date: 2003/05/17 02:54:40

diff --git a/python/mpw/test/test_methods.py b/python/mpw/test/test_methods.py
index 7ac4c5b..5c73877 100644 (file)
--- a/python/mpw/test/test_methods.py
+++ b/python/mpw/test/test_methods.py
@@ -161,11 +161,11 @@ class BasicTestCase(unittest.TestCase):
             print '\n', '-=' * 30
             print "Running %s.test03_Signs..." % \
                   self.__class__.__name__
-       wp = rpm.mpw(10)
+       wp = rpm.mpw(11)
        wm = -wp
        wpp = wp + 1
        wmm = -wpp
-       zp = long(10)
+       zp = long(11)
        zm = -zp
        zpp = zp + 1
        zmm = -zpp
@@ -185,6 +185,7 @@ class BasicTestCase(unittest.TestCase):
        print "div -+:\t", (wm/wp), "\t", (zm/zp)
        print "div +-:\t", (wp/wm), "\t", (zp/zm)
        print "div ++:\t", (wp/wp), "\t", (zp/zp)
+
        print "pow --:\t", (wm**wm), "\t", (zm**zm)
        print "pow -+:\t", (wm**wp), "\t", (zm**zp)
        print "pow +-:\t", (wp**wm), "\t", (zp**zm)

diff --git a/python/rpmmpw-py.c b/python/rpmmpw-py.c
index 4be45db..c032ee0 100644 (file)
--- a/python/rpmmpw-py.c
+++ b/python/rpmmpw-py.c
@@ -1539,10 +1539,12 @@ fprintf(stderr, "sub ++: borrow\n");
        mpnzero(&zn);
        if (msize == 0 || (msize == 1 && *mdata == 0))
            mpnsetw(&zn, 1);
-       else if (m->ob_size < 0)
+       else if (mpz(xsize, xdata) || m->ob_size < 0)
            mpnsetw(&zn, 0);
-       else
+       else {
+           zsign = (x->ob_size > 0 || mpeven(msize, mdata)) ? 1 : -1;
            mpnpow_w(&zn, xsize, xdata, msize, mdata);
+       }
        z = mpw_FromMPW(zn.size, zn.data, 1);
        mpnfree(&zn);
        if (zsign < 0)