[BigETI]

Test for, if a floating point number is not a real number (including NaN and infinity):

pawn Code:

#define isnrn(%0) (((_:(%0))&0x7F800000) == 0x7F800000)

Example:

pawn Code:

//...
if(isnrn(1.0/0.0)) printf("ERROR!");
if(isnrn(floatsqroot(-1.0))) printf("ERROR!");
//...