From cc504687bfd01b55bff1df00d9e6a0fa5d74717b Mon Sep 17 00:00:00 2001
From: wcancino <wcancino@331e1502-861f-0410-8da2-ba01fb791d7f>
Date: Mon, 2 Mar 2009 15:33:24 +0000
Subject: [PATCH] git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@1468
 331e1502-861f-0410-8da2-ba01fb791d7f

---
 .../branches/PhyloMOEA/PhyloMOEA/utils.cpp    | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/contribution/branches/PhyloMOEA/PhyloMOEA/utils.cpp b/contribution/branches/PhyloMOEA/PhyloMOEA/utils.cpp
index 1c4390695..c94b7c0a3 100644
--- a/contribution/branches/PhyloMOEA/PhyloMOEA/utils.cpp
+++ b/contribution/branches/PhyloMOEA/PhyloMOEA/utils.cpp
@@ -36,6 +36,31 @@ extern double pcrossover, pmutation, kappa, alpha;
 extern unsigned int ngenerations,  popsize, ncats;
 extern LikelihoodCalculator *lik_calc_ptr;
 
+
+int   timeval_subtract (struct timeval *result, struct timeval *x, struct timeval *y)
+{
+/* Perform the carry for the later subtraction by updating y. */
+	if (x->tv_usec < y->tv_usec) {
+		int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1;
+		y->tv_usec -= 1000000 * nsec;
+		y->tv_sec += nsec;
+	}
+
+	if (x->tv_usec - y->tv_usec > 1000000) {
+		int nsec = (x->tv_usec - y->tv_usec) / 1000000;
+		y->tv_usec += 1000000 * nsec;
+		y->tv_sec -= nsec;
+	}
+
+	/* Compute the time remaining to wait.
+	tv_usec is certainly positive. */
+	result->tv_sec = x->tv_sec - y->tv_sec;
+	result->tv_usec = x->tv_usec - y->tv_usec;
+	
+	/* Return 1 if result is negative. */
+	return x->tv_sec < y->tv_sec;
+}
+
 void welcome_message()
 {
 	cout << "\nPhyloMOEA, a program for multi-criteria phylogenetic inference\n";