Commits on Sep 12, 2024

1. Add float8_e8m0_fnu (E8M0) OCP MX scale format …

   Adding the OCP MX scale format `E8M0`, which has the following properties:
   * Unsigned format;
   * 8 exponent bits;
   * Exponent range from -127 to 127;
   * No zero and infinity;
   * Single NaN value (0xFF);
   
   `ml_dtypes` `float8_base` C++ class is extended to support floating point formats
   which are unsigned and with no zero (i.e. additional `kIsSigned` and `kHasZero` Traits properties).
   
   Base on these traits, `float8_e8m0_fnu` has been implemented using the existing functionalities (convert, unary/binary ops, ...).
   Float8 Python unit tests have been extended to be able to cover unsigned floating point formats.

   

   balancap committed Sep 12, 2024
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