slu_dcomplex.h File Reference

Header file for complex operations. More...

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Data Structures
struct	doublecomplex

Macros
#define	DCOMPLEX_INCLUDE
#define	z_add(c, a, b)
	Complex Addition c = a + b. More...
#define	z_sub(c, a, b)
	Complex Subtraction c = a - b. More...
#define	zd_mult(c, a, b)
	Complex-Double Multiplication. More...
#define	zz_mult(c, a, b)
	Complex-Complex Multiplication. More...
#define	zz_conj(a, b)
#define	z_eq(a, b)   ( (a)->r == (b)->r && (a)->i == (b)->i )
	Complex equality testing. More...

Functions
void	z_div (doublecomplex *, doublecomplex *, doublecomplex *)
	Complex Division c = a/b. More...
double	z_abs (doublecomplex *)
	Returns sqrt(z.r^2 + z.i^2) More...
double	z_abs1 (doublecomplex *)
	Approximates the abs. Returns abs(z.r) + abs(z.i) More...
void	z_exp (doublecomplex *, doublecomplex *)
	Return the exponentiation. More...
void	d_cnjg (doublecomplex *r, doublecomplex *z)
	Return the complex conjugate. More...
double	d_imag (doublecomplex *)
	Return the imaginary part. More...
doublecomplex	z_sgn (doublecomplex *)
	SIGN functions for complex number. Returns z/abs(z) More...
doublecomplex	z_sqrt (doublecomplex *)
	Square-root of a complex number. More...

Detailed Description

Copyright (c) 2003, The Regents of the University of California, through Lawrence Berkeley National Laboratory (subject to receipt of any required approvals from U.S. Dept. of Energy)

All rights reserved.

The source code is distributed under BSD license, see the file License.txt at the top-level directory.

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

Contains definitions for various complex operations.
This header file is to be included in source files z*.c

Macro Definition Documentation

#define DCOMPLEX_INCLUDE

#define z_add	(		c,
			a,
			b
	)

Value:

{ (c)->r = (a)->r + (b)->r; \
                         (c)->i = (a)->i + (b)->i; }

#define z_eq	(		a,
			b
	)		( (a)->r == (b)->r && (a)->i == (b)->i )

#define z_sub	(		c,
			a,
			b
	)

Value:

{ (c)->r = (a)->r - (b)->r; \
                         (c)->i = (a)->i - (b)->i; }

#define zd_mult	(		c,
			a,
			b
	)

Value:

{ (c)->r = (a)->r * (b); \
                           (c)->i = (a)->i * (b); }

#define zz_conj	(		a,
			b
	)

Value:

{ \
        (a)->r = (b)->r; \
        (a)->i = -((b)->i); \
    }

#define zz_mult	(		c,
			a,
			b
	)

Value:

{ \
        double cr, ci; \
        cr = (a)->r * (b)->r - (a)->i * (b)->i; \
        ci = (a)->i * (b)->r + (a)->r * (b)->i; \
        (c)->r = cr; \
        (c)->i = ci; \
    }

Function Documentation

void d_cnjg	(	doublecomplex *	r,
		doublecomplex *	z
	)

double d_imag

(

doublecomplex *

)

double z_abs

(

doublecomplex *

)

double z_abs1

(

doublecomplex *

)

void z_div	(	doublecomplex *	,
		doublecomplex *	,
		doublecomplex *
	)

void z_exp	(	doublecomplex *	,
		doublecomplex *
	)

doublecomplex z_sgn

(

doublecomplex *

)

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doublecomplex z_sqrt

(

doublecomplex *

)