FLT_MIN

[PaoloC13]

I tested my system to see which smallest number could be non-zero.

My result is this:

   float x = 8.0e-46f; // != 0.0f.
   float y = 7.0e-46f; // == 0.0f.

but I see in float.h that:

#define FLT_MIN    1.175494351e-38F

So, why this difference?
May be that FLT_MIN is system-dependent?

[TimoVJL]

IEEE 754 standard
Single-precision floating-point format

[PaoloC13]

Well, so I met the smallest positive subnormal number, or may be the minimal rounded position for it.