Streambase Launches Complex-event-processing Exchange

 
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Old 02-17-2010
Streambase Launches Complex-event-processing Exchange

by Chris Kanaracus, IDG News Service CEP (complex-event processing) vendor Streambase on Tuesday launched a Web site where customers, developers and partners can download, share and perhaps one day sell components. The new Streambase Component Exchange is stocked with an initial set of items, including an adapter for pulling in Twitter streams, an integration [...]

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Complex(3o)							   OCaml library						       Complex(3o)

NAME
Complex - Complex numbers. Module Module Complex Documentation Module Complex : sig end Complex numbers. This module provides arithmetic operations on complex numbers. Complex numbers are represented by their real and imaginary parts (carte- sian representation). Each part is represented by a double-precision floating-point number (type float ). type t = { re : float ; im : float ; } The type of complex numbers. re is the real part and im the imaginary part. val zero : t The complex number 0 . val one : t The complex number 1 . val i : t The complex number i . val neg : t -> t Unary negation. val conj : t -> t Conjugate: given the complex x + i.y , returns x - i.y . val add : t -> t -> t Addition val sub : t -> t -> t Subtraction val mul : t -> t -> t Multiplication val inv : t -> t Multiplicative inverse ( 1/z ). val div : t -> t -> t Division val sqrt : t -> t Square root. The result x + i.y is such that x > 0 or x = 0 and y >= 0 . This function has a discontinuity along the negative real axis. val norm2 : t -> float Norm squared: given x + i.y , returns x^2 + y^2 . val norm : t -> float Norm: given x + i.y , returns sqrt(x^2 + y^2) . val arg : t -> float Argument. The argument of a complex number is the angle in the complex plane between the positive real axis and a line passing through zero and the number. This angle ranges from -pi to pi . This function has a discontinuity along the negative real axis. val polar : float -> float -> t polar norm arg returns the complex having norm norm and argument arg . val exp : t -> t Exponentiation. exp z returns e to the z power. val log : t -> t Natural logarithm (in base e ). val pow : t -> t -> t Power function. pow z1 z2 returns z1 to the z2 power. OCamldoc 2012-06-26 Complex(3o)