format. If x is subnormal it is treated as though it were normalized; thus, for positive
finite x,
<pre>
- 1 <= x x FLT_RADIX<sup>-logb(x)</sup> < FLT_RADIX
+ 1 <= x FLT_RADIX<sup>-logb(x)</sup> < FLT_RADIX
</pre>
A domain error or pole error may occur if the argument is zero.
<p><b>Returns</b>