This option is useful for exploring low precisions independent of range limitations. If options.explim = 0 (default 1) then emax (the maximal exponent) for the specified arithmetic is ignored, so overflow, underflow, or subnormal numbers will be produced only if necessary for the data type of X.This option is useful for simulating soft errors. If options.flip = 1 (default 0) then each element of the rounded result has, with probability options.p (default 0.5), a randomly chosen bit in its significand flipped.6: stochastic rounding-round to the next larger or next smaller floating-point number with equal probability.įor stochastic rounding, exact floating-point numbers are not changed.5: stochastic rounding-round to the next larger or next smaller floating-point number with probability proportional to 1 minus the distance to those floating-point numbers.3: round towards minus infinity (round down).2: round towards plus infinity (round up).1: round to nearest using round to even last bit to break ties (the default).The form of rounding is specified by options.round:.1 = support subnormals (the default for fp16, fp32, and fp64).0 = do not support subnormals (the default for bfloat16),.options.subnormal specifies whether subnormal numbers are supported (if they are not, subnormals are flushed to zero):.In the last case the (base 2) format is defined by options.params, which is a 2-vector, where t is the number of bits in the significand (including the hidden bit) and emax is the maximum value of the exponent. ‘d’, ‘double’, ‘fp64’: IEEE double precision,.
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