How Functions Use fimath

Functions	Note
`conv`, `filter`	Error if attached `fimaths` differ.
`mean`, `median`	—

Functions	Note
`accumneg`, `accumpos`	By default, use `Floor` rounding method and `Wrap` overflow
`add`, `sub`, `mpy`	Override and discard any `fimath` objects attached to the input `fi` objects Uses the `fimath` from input, `F`, as in `add(F, a, b)`
CORDIC functions (see CORDIC Algorithms in MATLAB)	CORDIC functions use their own internal `fimath`: Rounding Mode – Floor Overflow Action – Wrap
`mod`	—
`qr`	—
`quantize`	Uses the math settings on the `quantizer` object, ignores and discards any `fimath` settings on the input
Trigonometric functions — `atan2`, `cos`, `sin`	—

Functions	Note
Built-in Types—`int32`, `int64`, `int8`, `uint16`, `uint32`, `uint64`, `uint8`	Ignore any `fimath` settings on the input. Always use the rounding method `Round` when casting to the new data type. The output is not a `fi` object so it has no attached `fimath`.
`bitsll`, `bitsra`, `bitsrl`	`OverflowAction` and `RoundingMethod` are ignored — bits drop off the end.
`bitshift`	`RoundingMethod` is ignored, but `OverflowAction` property is obeyed.

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