c++ - is there any difference between f+=1 and f+=1.0 if f is a double? -

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suppose have double f;

is difference between f+=1 , f+=1.0 ?

how compiler handler these situations?

i tried on computer , loop 1010 times, elapsed time same

referring c++03 here.

4.9 floating-integral conversions [conv.fpint]

an rvalue of integer type or of enumeration type can converted rvalue of floating point type. result exact if possible. otherwise, implementation-defined choice of either next lower or higher representable value.

if system can represent 1.0 (and looks can), expressions same.


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