Roots of unity: Difference between revisions

m
elided the minus sign in the exponent in the task description.
m (→‎{{header|REXX}}: added whitespace, aligned statements, changed some comments, optimized the R2R function.)
m (elided the minus sign in the exponent in the task description.)
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;Task:
Given &nbsp; <ttbig>'''n'''</ttbig>, &nbsp; find the &nbsp; <ttbig>'''n'''</ttsup>-th</sup></big> &nbsp; [[wp:Roots of unity|roots of unity]].
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