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be explicit about zero-division protection

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This commit is contained in:
Dane Springmeyer 2012-03-16 14:49:56 -07:00
parent 9556584b0c
commit cdc6376719
1 changed files with 2 additions and 2 deletions
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4
include/mapnik/ctrans.hpp
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@ -397,9 +397,9 @@ public:
sx_(1.0),
sy_(1.0)
{
if (extent_.width())
if (extent_.width() > 0)
sx_ = static_cast<double>(width_) / extent_.width();
if (extent_.height())
if (extent_.height() > 0)
sy_ = static_cast<double>(height_) / extent_.height();
}