'\" te .\" Copyright 1989 AT&T Copyright (c) 2002, Sun Microsystems, Inc. All Rights Reserved .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License. .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License. .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] .TH DIFFTIME 3C "Jul 24, 2002" .SH NAME difftime \- computes the difference between two calendar times .SH SYNOPSIS .LP .nf #include <time.h> \fBdouble\fR \fBdifftime\fR(\fBtime_t\fR \fItime1\fR, \fBtime_t\fR \fItime0\fR); .fi .SH DESCRIPTION .sp .LP The \fBdifftime()\fR function computes the difference between two calendar times. .SH RETURN VALUES .sp .LP The \fBdifftime()\fR functions returns the difference \fI(time1-time0)\fR expressed in seconds as a \fBdouble\fR. .SH USAGE .sp .LP The \fBdifftime()\fR function is provided because there are no general arithmetic properties defined for type \fBtime_t\fR. .SH ATTRIBUTES .sp .LP See \fBattributes\fR(7) for descriptions of the following attributes: .sp .sp .TS box; c | c l | l . ATTRIBUTE TYPE ATTRIBUTE VALUE _ Interface Stability Standard _ MT-Level MT-Safe .TE .SH SEE ALSO .sp .LP .BR ctime (3C), .BR attributes (7), .BR standards (7)