QDataStream::setFloatingPointPrecision /double / sinlge floats and doubles ?

[tonnot]

On qt reference you write :

if the floating point precision is DoublePrecision and the version of the data stream is Qt_4_6 or higher, all floating point numbers will be written and read with 64-bit precision. If the floating point precision is SinglePrecision and the version is Qt_4_6 or higher, all floating point numbers will be written and read with 32-bit precision.

I want always 32 for my floats and 64 for my doubles.

I dont understand what is for setFloatingPointPrecision...

Auto answer... Only affects to Qreal ?