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34 lines
725 B
Plaintext
34 lines
725 B
Plaintext
NAME
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arg - argument (the angle or phase) of a complex number
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SYNOPSIS
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arg(x [,eps])
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TYPES
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x number
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eps nonzero real, defaults to epsilon()
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return real
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DESCRIPTION
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Returns the argument of x to the nearest or next to nearest multiple of
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eps; the error will be less in absolute value than 0.75 * abs(eps),
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but usually less than 0.5 * abs(eps).
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EXAMPLE
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> print arg(2), arg(2+3i, 1e-5), arg(2+3i, 1e-10), arg(2+3i, 1e-20)
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0 .98279 .9827937232 .98279372324732906799
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> pi = pi(1e-10); deg = pi/180; eps = deg/10000
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> print arg(2+3i, eps)/deg, arg(-1 +1i, eps)/deg, arg(-1 - 1i,eps)/deg
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56.3099 135 -135
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LIMITS
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none
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LIBRARY
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none
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SEE ALSO
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conj, im, polar, re
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