Lupp wrote:We need a figure … to be able to represent negative numbers as constants.

APL, developed in the 1960s, had that feature.

- was an operator which denoted negation (monadically) or subtraction (dyadically).

¯ indicated that a numeric constant was negative.

An

APL interpreter shows the different results. ★, when used dyadically, is the exponentation operator; ÷, when used monadically, is the reciprocal operator. All operators in APL are

right-associative, so people usually read expressions right to left. ¯2★÷3 means (Calc formula)

=(−2)^(1/3) but −2★÷3 means

=−(2^(1/3)). APL supports complex numbers and 0.629961+1.09112i is one of the three cube roots of minus two.

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Mr. Programmer

AOO 4.1.5 Build 9789 on MacOS 10.11.6. The locale for any menus or Calc formulas in my posts is English (USA).