Treat reciprocal as a unary function, instead of handling it through the
binary function testing mechanism and special-casing it there.
This addresses two shortcomings of the previous implementation:
- Testing took significantly longer as the entire input domain was
tested many times (e.g. fp16 reciprocal has only 2^16 possible input
values, but binary function testing iterates over 2^16 * 2^16 input
values).
- The reciprocal test kernel was identical to the divide kernel. Thus
the device compiler would see a regular divide operation instead of a
reciprocal operation and would be unlikely to emit a specialized
reciprocal sequence.
This reverts all of the changes in binary_operator*.cpp made by
bcfa1f7c2 ("Added corrections to re-enable reciprocal test in
math_brute_force suite for relaxed math mode (#2221)", 2025-02-04).
Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>
7feb93cdd7