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39 lines
845 B
Plaintext
39 lines
845 B
Plaintext
NAME
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hmean - harmonic mean of a number of values
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SYNOPSIS
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hmean(x_1, x_2, ...)
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TYPES
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x_1, ... arithmetic or list
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return determined by types of arguments, or null
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DESCRIPTION
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The null value is returned if there are no arguments.
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If there are n non-list arguments x_1, x_2, ... and the
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required operations are defined, hmean(x_1, x_2, ...) returns the
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value of:
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n/(inverse(x_1) + inverse(x_2) + ... + inverse(x_n)).
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If an argument x_i is a list as defined by list(y_1, ..., y_m)
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this is treated as if in (x_1, x_2, ...), x_i is replaced by
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y_1, ..., y_m.
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EXAMPLE
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> c = config("mode", "frac")
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> print hmean(1), hmean(1,2), hmean(1,2,3), hmean(1,2,3,4), hmean(1,2,0,3)
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1 4/3 18/11 48/25 0
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LIMITS
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The number of arguments is not to exceed 100.
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LIBRARY
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none
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SEE ALSO
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avg
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