h.log2

来自「强大的数学工具包」· LOG2 代码 · 共 24 行

                               * * * * * * *
                               *    log2   *
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        "logarithm, base 2"
        SYNTAX: X = log2(A)

        A is an expression whose value is a positive integer or
        a positive rational number.

        X is assigned the integer part of the base 2 logarithm of A.


        Example 1: (correct)

                log2(71 * 2^(23 - gcd(3, 12345)) + 4)


        Example 2: (incorrect)

                log2(120 - 5 * 25)
                
_ERR_NR_021