/* * Ray2mesh : software for geophysicists. * Compute various scores attached to the mesh cells, based on geometric   information that rays bring when the traverse the cell. * * Copyright (C) 2003, St閜hane Genaud and Marc Grunberg * * This tool is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */#include <stdlib.h>#include <assert.h>#include <math.h>#include <time.h>#include <mesh/mesh.h>#include <mesh/layer.h>#include <ray/coord.h>#include "ray2mesh.h"#include "const_ray2mesh.h"/** * \brief return a date string                             **/char *get_date_stamp(){    time_t t;    struct tm *d;    char *s;    s = (char *) malloc(128 * sizeof(char));    assert(s);    t = time(NULL);       /* localtime puts result in an internal static object       and return a pointer to that object       ie. d doesn't nee to be freed */    d = localtime(&t);    sprintf(s, "%.2d/%.2d/%.4d-%.2d:%.2d:%.2d", d->tm_mday, d->tm_mon, d->tm_year + 1900,	    d->tm_hour, d->tm_min, d->tm_sec);    return (s);}