--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dmd/complex_t.h	Sat Sep 01 21:43:27 2007 +0200
@@ -0,0 +1,74 @@
+
+// Compiler implementation of the D programming language
+// Copyright (c) 1999-2006 by Digital Mars
+// All Rights Reserved
+// written by Walter Bright and Burton Radons
+// http://www.digitalmars.com
+// License for redistribution is by either the Artistic License
+// in artistic.txt, or the GNU General Public License in gnu.txt.
+// See the included readme.txt for details.
+
+#ifndef DMD_COMPLEX_T_H
+#define DMD_COMPLEX_T_H
+
+/* Roll our own complex type for compilers that don't support complex
+ */
+
+struct complex_t
+{
+    long double re;
+    long double im;    
+
+    complex_t() { this->re = 0; this->im = 0; }
+    complex_t(long double re) { this->re = re; this->im = 0; }
+    complex_t(long double re, long double im) { this->re = re; this->im = im; }
+
+    complex_t operator + (complex_t y) { complex_t r; r.re = re + y.re; r.im = im + y.im; return r; }
+    complex_t operator - (complex_t y) { complex_t r; r.re = re - y.re; r.im = im - y.im; return r; }
+    complex_t operator - () { complex_t r; r.re = -re; r.im = -im; return r; }
+    complex_t operator * (complex_t y) { return complex_t(re * y.re - im * y.im, im * y.re + re * y.im); }
+    
+    complex_t operator / (complex_t y)
+    {
+	long double abs_y_re = y.re < 0 ? -y.re : y.re;
+	long double abs_y_im = y.im < 0 ? -y.im : y.im;
+	long double r, den;
+
+	if (abs_y_re < abs_y_im)
+	{
+	    r = y.re / y.im;
+	    den = y.im + r * y.re;
+	    return complex_t((re * r + im) / den,
+			     (im * r - re) / den);
+	}
+	else
+	{
+	    r = y.im / y.re;
+	    den = y.re + r * y.im;
+	    return complex_t((re + r * im) / den,
+			     (im - r * re) / den);
+	}
+    }
+
+    operator bool () { return re || im; }
+
+    int operator == (complex_t y) { return re == y.re && im == y.im; }
+    int operator != (complex_t y) { return re != y.re || im != y.im; }
+};
+
+inline complex_t operator * (long double x, complex_t y) { return complex_t(x) * y; }
+inline complex_t operator * (complex_t x, long double y) { return x * complex_t(y); }
+inline complex_t operator / (complex_t x, long double y) { return x / complex_t(y); }
+
+
+inline long double creall(complex_t x)
+{
+    return x.re;
+}
+
+inline long double cimagl(complex_t x)
+{
+    return x.im;
+}
+
+#endif