On 01/18/2018 08:43 AM, Alex Bennée wrote:
> /* Expand fields based on the size of exponent and fraction */
> #define FRAC_PARAMS(E, F) \
> .exp_size = E, \
> .frac_size = F, \
> .frac_shift = DECOMPOSED_BINARY_POINT - F, \
> .frac_lsb = 1ull << (DECOMPOSED_BINARY_POINT - F), \
> .frac_lsbm1 = 1ull << ((DECOMPOSED_BINARY_POINT - F) - 1), \
> .round_mask = (1ull << (DECOMPOSED_BINARY_POINT - F)) - 1, \
> .roundeven_mask = (2ull << (DECOMPOSED_BINARY_POINT - F)) - 1
>
> static const FloatFmt float16_params = {
> .exp_bias = 0x0f,
> .exp_max = 0x1f,
> FRAC_PARAMS(5, 10)
> };
You can compute exp_bias and exp_max from E as well.
r~
