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List: kstars-devel
Subject: [Kstars-devel] KDE/kdeedu/kstars/kstars
From: Henry de Valence <hdevalence () gmail ! com>
Date: 2010-07-23 19:34:55
Message-ID: 20100723193455.EE65CAC7E8 () svn ! kde ! org
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SVN commit 1153695 by hdevalence:
Use a closed form instead of an iterative solution for reducing angles.
Note: we don't just use fmod because it does not guarantee
a positive remainder.
CCMAIL:kstars-devel@kde.org
M +1 -4 dms.cpp
M +1 -5 ksutils.h
--- trunk/KDE/kdeedu/kstars/kstars/dms.cpp #1153694:1153695
@@ -197,10 +197,7 @@
const dms dms::reduce( void ) const {
- double a = D;
- while (a<0.0) {a += 360.0;}
- while (a>=360.0) {a -= 360.0;}
- return dms( a );
+ return dms( D - 360.0*floor(D/360.0) );
}
const QString dms::toDMSString(const bool forceSign) const {
--- trunk/KDE/kdeedu/kstars/kstars/ksutils.h #1153694:1153695
@@ -67,11 +67,7 @@
template<typename T>
inline T reduceAngle(T x, T min, T max) {
T delta = max - min;
- while( x > max )
- x -= delta;
- while( x < min )
- x += delta;
- return x;
+ return x - delta*floor( (x-min)/delta );
}
}
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