logb
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Contents: Description, Arguments, Usage, Examples, Sub-Functions, Related Functions, Source Supported Under Version: >1.00
Description Arbitrary logarithm.
Arguments and Return Values Arguments: Two numeric arrays (any format). The first input is the base for the logarithm; the second is the values for which the logarithm is to be taken. Return Value: A numeric array containing the log (with the specified base) of the input; output format is double if input is double, float otherwise If no arguments are input, logb() prints its description, as shown below.
Usage Syntax: logb(b,x) 'b', 'x' - numeric arrays (any format)
Examples dv> logb() Logarithm with arbitrary base logb(b,x) returns ln(x)/ln(b) Note that the base is the first input Works for arrays S.Marshall 12-06-2007 0 dv> logb(3,9) 2.00000 dv> logb(9,3) 0.500000 dv> logb(0.5,0.5//1.//1.5//2.) 4x1x1 array of float, bsq format [16 bytes] 1.00000 -0.00000 -0.584962 -1.00000 dv> logb(2//4,8) 2x1x1 array of float, bsq format [8 bytes] 3.00000 1.50000 dv> logb(2//3,4//9) 2x1x1 array of float, bsq format [8 bytes] 2.00000 2.00000 |
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Recent Library Changes Created On: 12-07-2007 |
