complex.c File Reference

#include "common.h"
#include <stdio.h>
#include <math.h>
#include "machine.h"
#include "bu.h"
#include "vmath.h"
#include "bn.h"

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Defines
#define	SIGN(x)   ((x) == 0 ? 0 : (x) > 0 ? 1 : -1)
#define	ABS(a)   ((a) >= 0 ? (a) : -(a))
Functions
void	bn_cx_div (register bn_complex_t *ap, register const bn_complex_t *bp)
	Divide one complex by another.
void	bn_cx_sqrt (bn_complex_t *op, register const bn_complex_t *ip)
	Compute square root of complex number.

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Detailed Description

Functions:

• bn_cx_div Complex Division
• bn_cx_sqrt Complex Square Root

Author:

Douglas A Gwyn (Original Version)

Michael John Muuss (Macro Version)

Source -

SECAD/VLD Computing Consortium, Bldg 394
The U. S. Army Ballistic Research Laboratory
Aberdeen Proving Ground, Maryland 21005

Definition in file complex.c.

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Define Documentation

#define SIGN (  x   )     ((x) == 0 ? 0 : (x) > 0 ? 1 : -1)

Definition at line 56 of file complex.c. Referenced by bn_cx_sqrt().

#define ABS (  a   )     ((a) >= 0 ? (a) : -(a))

Definition at line 57 of file complex.c. Referenced by bn_cx_div().

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Function Documentation

void bn_cx_div (  register bn_complex_t *  ap, register const bn_complex_t *  bp )

Divide one complex by another. B N _ C X _ D I V bn_cx_div( &a, &b ) divides a by b . Zero divisor fails. a and b may coincide. Result stored in a. Definition at line 68 of file complex.c. References ABS, bu_log(), FAST, NEAR_ZERO, and SQRT_SMALL_FASTF. Here is the call graph for this function:

void bn_cx_sqrt (  bn_complex_t *  op, register const bn_complex_t *  ip )

Compute square root of complex number. B N _ C X _ S Q R T bn_cx_sqrt( &out, &c ) replaces out by sqrt(c) Note: This is a double-valued function; the result of bn_cx_sqrt() always has nonnegative imaginary part. Definition at line 112 of file complex.c. References bn_cx_ampl, FAST, bn_complex::im, bn_complex::re, and SIGN.

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