lsd_mkb/lsd_mkb_superlu/superlu_seq/scomplex.c File Reference

Common arithmetic for complex type. More...

#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include "slu_scomplex.h"

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Functions
void	c_div (complex *c, complex *a, complex *b)
	Complex Division c = a/b.
double	c_abs (complex *z)
	Returns sqrt(z.r^2 + z.i^2).
double	c_abs1 (complex *z)
	Approximates the abs. Returns abs(z.r) + abs(z.i).
void	c_exp (complex *r, complex *z)
	Return the exponentiation.
void	r_cnjg (complex *r, complex *z)
	Return the complex conjugate.
double	r_imag (complex *z)
	Return the imaginary part.
complex	c_sgn (complex *z)
	SIGN functions for complex number. Returns z/abs(z).
complex	c_sqrt (complex *z)
	Square-root of a complex number.

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Detailed Description

Common arithmetic for complex type.

 -- SuperLU routine (version 2.0) --
 Univ. of California Berkeley, Xerox Palo Alto Research Center,
 and Lawrence Berkeley National Lab.
 November 15, 1997

 This file defines common arithmetic operations for complex type.
 

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Function Documentation

double c_abs

(

complex *

z

)

Returns sqrt(z.r^2 + z.i^2).

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double c_abs1

(

complex *

z

)

Approximates the abs. Returns abs(z.r) + abs(z.i).

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void c_div	(	complex *	c,
		complex *	a,
		complex *	b
	)

Complex Division c = a/b.

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void c_exp	(	complex *	r,
		complex *	z
	)

Return the exponentiation.

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complex c_sgn

(

complex *

z

)

SIGN functions for complex number. Returns z/abs(z).

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complex c_sqrt

(

complex *

z

)

Square-root of a complex number.

void r_cnjg	(	complex *	r,
		complex *	z
	)

Return the complex conjugate.

double r_imag

(

complex *

z

)

Return the imaginary part.