doc fix

Author: awf

docs/source/index.rst

@@ -72,8 +72,8 @@ gfloat has been used to tabulate properties of various floating point formats.
  - P: Precision in bits
  - E: Exponent field width in bits
  - smallest: Smallest positive value
- - smallest_normal: Smallest positive normal value, NaN if no finite values are normal
- - max: Largest finite normal value, NaN if all finite values are subnormal
+ - smallest_normal: Smallest positive normal value, n/a if no finite values are normal
+ - max: Largest finite value
  - num_nans: Number of NaN values
  - num_infs: Number of infinities (2 or 0)