Description:
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sprintf("%03d ",(1.15*100)); and values multiplied by 2 return wrong values
ex 114 instead of 115

Test script:
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$price=1.15*100;
echo sprintf("%03d ",$price); // prints 114 instead of 115

$price=1.15*100*2;
echo sprintf("%03d ",$price); // prints 229 instead of 230

$price=1.15*100*4;
echo sprintf("%03d ",$price); // prints 459 instead of 460

$price=1.15*100*8;
echo sprintf("%03d ",$price); // prints 919 instead of 920

$price=1.15*100*10;
echo sprintf("%03d ",$price); // prints 1149 instead of 1150