complex.h

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/* CAUTION: This is the ANSI C (only) version of the Numerical Recipes
   utility file complex.h.  Do not confuse this file with the same-named
   file complex.h that is supplied in the 'misc' subdirectory.
   *That* file is the one from the book, and contains both ANSI and
   traditional K&R versions, along with #ifdef macros to select the
   correct version.  *This* file contains only ANSI C.               */

#ifndef _NR_COMPLEX_H_
#define _NR_COMPLEX_H_

#ifndef _FCOMPLEX_DECLARE_T_
typedef struct FCOMPLEX {float r,i;} fcomplex;
#define _FCOMPLEX_DECLARE_T_
#endif /* _FCOMPLEX_DECLARE_T_ */

fcomplex Cadd(fcomplex a, fcomplex b);
fcomplex Csub(fcomplex a, fcomplex b);
fcomplex Cmul(fcomplex a, fcomplex b);
fcomplex Complex(float re, float im);
fcomplex Conjg(fcomplex z);
fcomplex Cdiv(fcomplex a, fcomplex b);
float Cabs(fcomplex z);
fcomplex Csqrt(fcomplex z);
fcomplex RCmul(float x, fcomplex a);

#endif /* _NR_COMPLEX_H_ */