/*
* -- SuperLU routine (version 2.0) --
* Lawrence Berkeley National Lab, Univ. of California Berkeley,
* and Xerox Palo Alto Research Center.
* September 10, 2007
*
*/
#ifndef __SUPERLU_DCOMPLEX /* allow multiple inclusions */
#define __SUPERLU_DCOMPLEX
/*
* This header file is to be included in source files z*.c
*/
#ifndef DCOMPLEX_INCLUDE
#define DCOMPLEX_INCLUDE
namespace harlinn
{
namespace numerics
{
namespace SuperLU
{
typedef struct { double r, i; } doublecomplex;
/* Macro definitions */
/* Complex Addition c = a + b */
#define z_add(c, a, b) { (c)->r = (a)->r + (b)->r; \
(c)->i = (a)->i + (b)->i; }
/* Complex Subtraction c = a - b */
#define z_sub(c, a, b) { (c)->r = (a)->r - (b)->r; \
(c)->i = (a)->i - (b)->i; }
/* Complex-Double Multiplication */
#define zd_mult(c, a, b) { (c)->r = (a)->r * (b); \
(c)->i = (a)->i * (b); }
/* Complex-Complex Multiplication */
#define zz_mult(c, a, b) { \
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; \
}
#define zz_conj(a, b) { \
(a)->r = (b)->r; \
(a)->i = -((b)->i); \
}
/* Complex equality testing */
#define z_eq(a, b) ( (a)->r == (b)->r && (a)->i == (b)->i )
/* Prototypes for functions in dcomplex.c */
void z_div(doublecomplex *, doublecomplex *, doublecomplex *);
double z_abs(doublecomplex *); /* exact */
double z_abs1(doublecomplex *); /* approximate */
void z_exp(doublecomplex *, doublecomplex *);
void d_cnjg(doublecomplex *r, doublecomplex *z);
double d_imag(doublecomplex *);
};
};
};
#endif
#endif /* __SUPERLU_DCOMPLEX */