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#ifndef _complex_
#define _complex_
#include <math.h>
typedef struct {
double real,
imag;
} complex;
typedef complex sl2c_matrix[2][2];
#ifndef PROTOTYPES
Please #include options.h BEFORE complex.h.
#endif
#if PROTOTYPES
extern complex cplx_minus(complex, complex),
cplx_plus(complex, complex),
cplx_mult(complex, complex),
cplx_div(complex, complex);
extern double modulus(complex);
extern complex cplx_sqrt(complex);
extern void sl2c_mult(sl2c_matrix, sl2c_matrix, sl2c_matrix);
extern void sl2c_copy(sl2c_matrix, sl2c_matrix);
extern void sl2c_normalize(sl2c_matrix);
extern void sl2c_invert(sl2c_matrix, sl2c_matrix);
extern double sl2c_norm_squared(sl2c_matrix);
extern void sl2c_adjoint(sl2c_matrix, sl2c_matrix);
extern double acosh(double);
#else
extern complex cplx_minus(),
cplx_plus(),
cplx_mult(),
cplx_div();
extern double modulus();
extern complex cplx_sqrt();
extern double sl2c_norm_squared();
/*extern double acosh();*/
#endif
extern complex zero;
extern complex one;
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.