In Linux round() NAN float, return negative garbage values

[npatil15]

Hello,

I'm trying to do something like below,

float realValue = 5.2;
float nanValue = NAN;
qDebug()<<"realValue"<<round(realValue)<<"nanValue"<<round(nanValue);

float realValue = 5.2;
float nanValue = NAN;
qDebug()<<"realValue"<<round(realValue)<<"nanValue"<<round(nanValue);

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Output in Linux:

realValue 5 nanValue -2147483648

realValue 5 nanValue -2147483648

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Here for NAN value, it's giving negative value. Is there any alternative for this or how should I handle this in Linux?

I'm using these values to set the size of variable and size cannot be negative nor NAN.

Again, if anyhow I tried to figure out NAN value, then added with NAN value is always NAN.

qDebug()<<"Output is: "<<(NAN+90)
//Output:
Output is: NAN

qDebug()<<"Output is: "<<(NAN+90)
//Output:
Output is: NAN

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Thanks