* Here we test GiNaC's color objects (su(3) Lie algebra). */
/*
- * GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2004 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
return 0;
}
-static unsigned color_check1(void)
+static unsigned color_check1()
{
// checks general identities and contractions of the structure constants
return result;
}
-static unsigned color_check2(void)
+static unsigned color_check2()
{
// checks general identities and contractions of the generators
return result;
}
-static unsigned color_check3(void)
+static unsigned color_check3()
{
// checks traces
unsigned result = 0;
- idx a(symbol("a"), 8), b(symbol("b"), 8), c(symbol("c"), 8), k(symbol("k"), 8);
+ idx a(symbol("a"), 8), b(symbol("b"), 8), c(symbol("c"), 8);
ex e;
e = color_ONE();
e = color_T(a) * color_T(b) * color_T(c);
result += check_equal(color_trace(e), color_h(a, b, c) / 4);
+ e = color_ONE(0) * color_ONE(1) / 9;
+ result += check_equal(color_trace(e, 0), color_ONE(1) / 3);
+ result += check_equal(color_trace(e, 1), color_ONE(0) / 3);
+ result += check_equal(color_trace(e, 2), e);
+ result += check_equal(color_trace(e, lst(0, 1)), 1);
+
+ e = color_T(a, 0) * color_T(a, 1) * color_T(b, 0) * color_T(b, 1);
+ result += check_equal_simplify(color_trace(e, 0), 2 * color_ONE(1) / 3);
+ result += check_equal_simplify(color_trace(e, 1), 2 * color_ONE(0) / 3);
+ result += check_equal_simplify(color_trace(e, 2), e);
+ result += check_equal_simplify(color_trace(e, lst(0, 1)), 2);
+
return result;
}
-unsigned exam_color(void)
+unsigned exam_color()
{
unsigned result = 0;