lsd_mkb/lsd_mkb_superlu/superlu_seq/slu_scomplex.h File Reference

Header file for complex operations. More...

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Classes
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

Header file for complex operations.

 
  -- 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; }

Complex Addition c = a + b.

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

Complex equality testing.

#define c_sub	(	c,
		a,
		b		)

Value:

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

Complex Subtraction c = a - b.

#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; \
    }

Complex-Complex Multiplication.

#define cs_mult	(	c,
		a,
		b		)

Value:

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

Complex-Double Multiplication.

---

Function Documentation

double c_abs

(

complex *

)

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

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double c_abs1

(

complex *

)

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

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

Complex Division c = a/b.

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void c_exp	(	complex *	,
		complex *
	)

Return the exponentiation.

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complex c_sgn

(

complex *

)

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

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complex c_sqrt

(

complex *

)

Square-root of a complex number.

void r_cnjg	(	complex *	,
		complex *
	)

Return the complex conjugate.

double r_imag

(

complex *

)

Return the imaginary part.