12 Other important unary operations
12.1 Scope of the prototype
To perform tests of the merits of unums, we will need the sort of functions you find on the buttons of scientific calculators. One category of functions not in the prototype is inverse trigonometry functions like arctangent. Those are left as an exercise for the reader to develop; they are not needed for any of the experiments in this book.
“Unary” operations are operations that take just one input value and produce one output value. Unlike the basic + – × ÷ operations and the xy function, unary operations increment the ubitsmoved tally by just the bit counts in the one input and one output ubound, and increment numbersmoved by 2 instead of 3.
The section on trigonometric functions ...
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