SRC/slu_scomplex.h File Reference

Header file for complex operations. More...

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Data Structures
struct	complex
Defines
#define	c_add(c, a, b)
	Complex Addition c = a + b.
#define	c_sub(c, a, b)
	Complex Subtraction c = a - b.
#define	cs_mult(c, a, b)
	Complex-Double Multiplication.
#define	cc_mult(c, a, b)
	Complex-Complex Multiplication.
#define	cc_conj(a, b)
#define	c_eq(a, b)   ( (a)->r == (b)->r && (a)->i == (b)->i )
	Complex equality testing.
Functions
void	c_div (complex *, complex *, complex *)
	Complex Division c = a/b.
double	c_abs (complex *)
	Returns sqrt(z.r^2 + z.i^2).
double	c_abs1 (complex *)
	Approximates the abs. Returns abs(z.r) + abs(z.i).
void	c_exp (complex *, complex *)
	Return the exponentiation.
void	r_cnjg (complex *, complex *)
	Return the complex conjugate.
double	r_imag (complex *)
	Return the imaginary part.
complex	c_sgn (complex *)
	SIGN functions for complex number. Returns z/abs(z).
complex	c_sqrt (complex *)
	Square-root of a complex number.

---

Detailed Description

 
  -- 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 c*.c
 

---

Define Documentation

#define c_add	(	c,
		a,
		b		)

Value:

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

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

#define c_sub	(	c,
		a,
		b		)

Value:

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

#define cc_conj	(	a,
		b		)

Value:

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

#define cc_mult	(	c,
		a,
		b		)

Value:

{ \
        float 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; \
    }

#define cs_mult	(	c,
		a,
		b		)

Value:

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

---

Function Documentation

double c_abs

(

complex *

)

double c_abs1

(

complex *

)

void c_div	(	complex *	,
		complex *	,
		complex *
	)

void c_exp	(	complex *	,
		complex *
	)

complex c_sgn

(

complex *

)

complex c_sqrt

(

complex *

)

void r_cnjg	(	complex *	,
		complex *
	)

double r_imag

(

complex *

)