From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001 From: Joseph Hunkeler Date: Wed, 8 Jul 2015 20:46:52 -0400 Subject: Initial commit --- math/slalib/ranorm.f | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 math/slalib/ranorm.f (limited to 'math/slalib/ranorm.f') diff --git a/math/slalib/ranorm.f b/math/slalib/ranorm.f new file mode 100644 index 00000000..77f4b781 --- /dev/null +++ b/math/slalib/ranorm.f @@ -0,0 +1,49 @@ + REAL FUNCTION slRA2P (ANGLE) +*+ +* - - - - - - - +* R A 2 P +* - - - - - - - +* +* Normalize angle into range 0-2 pi (single precision) +* +* Given: +* ANGLE dp the angle in radians +* +* The result is ANGLE expressed in the range 0-2 pi (single +* precision). +* +* P.T.Wallace Starlink 23 November 1995 +* +* Copyright (C) 1995 Rutherford Appleton Laboratory +* +* License: +* 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 +* the Free Software Foundation; either version 2 of the License, or +* (at your option) any later version. +* +* This program 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 General Public License for more details. +* +* You should have received a copy of the GNU General Public License +* along with this program (see SLA_CONDITIONS); if not, write to the +* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, +* Boston, MA 02110-1301 USA +* +* Copyright (C) 1995 Association of Universities for Research in Astronomy Inc. +*- + + IMPLICIT NONE + + REAL ANGLE + + REAL A2PI + PARAMETER (A2PI=6.283185307179586476925287) + + + slRA2P=MOD(ANGLE,A2PI) + IF (slRA2P.LT.0.0) slRA2P=slRA2P+A2PI + + END -- cgit