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Maths (Arithmetic): logL

[BBC Master version]

Name: logL [Show more] Type: Variable Category: Maths (Arithmetic) Summary: Binary logarithm table (low byte)
Context: See this variable in context in the source code Variations: See code variations for this variable in the different versions References: This variable is used as follows: * DVID4 uses logL * FMLTU uses logL * LL28 uses logL * LOIN (Part 2 of 7) uses logL * LOIN (Part 5 of 7) uses logL

Byte n contains the low byte of: 32 * log2(n) * 256
.logL SKIP 1 FOR I%, 1, 255 B% = INT(&2000 * LOG(I%) / LOG(2) + 0.5) EQUB B% MOD 256 NEXT