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                    go_complex;
                    go_complexl;
char*               go_complex_to_string                (go_complex const *src,
                                                         char const *reformat,
                                                         char const *imformat,
                                                         char imunit);
int                 go_complex_from_string              (go_complex *dst,
                                                         char const *src,
                                                         char *imunit);
void                go_complex_to_polar                 (double *mod,
                                                         double *angle,
                                                         go_complex const *src);
void                go_complex_from_polar               (go_complex *dst,
                                                         double mod,
                                                         double angle);
void                go_complex_mul                      (go_complex *dst,
                                                         go_complex const *a,
                                                         go_complex const *b);
void                go_complex_div                      (go_complex *dst,
                                                         go_complex const *a,
                                                         go_complex const *b);
void                go_complex_pow                      (go_complex *dst,
                                                         go_complex const *a,
                                                         go_complex const *b);
void                go_complex_sqrt                     (go_complex *dst,
                                                         go_complex const *src);
void                go_complex_init                     (go_complex *dst,
                                                         double re,
                                                         double im);
void                go_complex_real                     (go_complex *dst,
                                                         double re);
int                 go_complex_real_p                   (go_complex const *src);
int                 go_complex_zero_p                   (go_complex const *src);
double              go_complex_mod                      (go_complex const *src);
double              go_complex_angle                    (go_complex const *src);
void                go_complex_conj                     (go_complex *dst,
                                                         go_complex const *src);
void                go_complex_scale_real               (go_complex *dst,
                                                         double f);
void                go_complex_add                      (go_complex *dst,
                                                         go_complex const *a,
                                                         go_complex const *b);
void                go_complex_sub                      (go_complex *dst,
                                                         go_complex const *a,
                                                         go_complex const *b);
void                go_complex_exp                      (go_complex *dst,
                                                         go_complex const *src);
void                go_complex_ln                       (go_complex *dst,
                                                         go_complex const *src);
void                go_complex_sin                      (go_complex *dst,
                                                         go_complex const *src);
void                go_complex_cos                      (go_complex *dst,
                                                         go_complex const *src);
void                go_complex_tan                      (go_complex *dst,
                                                         go_complex const *src);
char*               go_complex_to_stringl               (go_complexl const *src,
                                                         char const *reformat,
                                                         char const *imformat,
                                                         char imunit);
int                 go_complex_from_stringl             (go_complexl *dst,
                                                         char const *src,
                                                         char *imunit);
void                go_complex_to_polarl                (long double *mod,
                                                         long double *angle,
                                                         go_complexl const *src);
void                go_complex_from_polarl              (go_complexl *dst,
                                                         long double mod,
                                                         long double angle);
void                go_complex_mull                     (go_complexl *dst,
                                                         go_complexl const *a,
                                                         go_complexl const *b);
void                go_complex_divl                     (go_complexl *dst,
                                                         go_complexl const *a,
                                                         go_complexl const *b);
void                go_complex_powl                     (go_complexl *dst,
                                                         go_complexl const *a,
                                                         go_complexl const *b);
void                go_complex_sqrtl                    (go_complexl *dst,
                                                         go_complexl const *src);
void                go_complex_initl                    (go_complexl *dst,
                                                         long double re,
                                                         long double im);
void                go_complex_reall                    (go_complexl *dst,
                                                         long double re);
int                 go_complex_real_pl                  (go_complexl const *src);
int                 go_complex_zero_pl                  (go_complexl const *src);
void                go_complex_conjl                    (go_complexl *dst,
                                                         go_complexl const *src);
void                go_complex_scale_reall              (go_complexl *dst,
                                                         long double f);
void                go_complex_addl                     (go_complexl *dst,
                                                         go_complexl const *a,
                                                         go_complexl const *b);
void                go_complex_subl                     (go_complexl *dst,
                                                         go_complexl const *a,
                                                         go_complexl const *b);
void                go_complex_expl                     (go_complexl *dst,
                                                         go_complexl const *src);
void                go_complex_lnl                      (go_complexl *dst,
                                                         go_complexl const *src);
void                go_complex_sinl                     (go_complexl *dst,
                                                         go_complexl const *src);
void                go_complex_cosl                     (go_complexl *dst,
                                                         go_complexl const *src);
void                go_complex_tanl                     (go_complexl *dst,
                                                         go_complexl const *src);
char* go_complex_to_string (go_complex const *src, char const *reformat, char const *imformat, char imunit);
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int go_complex_from_string (go_complex *dst, char const *src, char *imunit);
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void                go_complex_to_polar                 (double *mod,
                                                         double *angle,
                                                         go_complex const *src);
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void go_complex_from_polar (go_complex *dst, double mod, double angle);
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void go_complex_mul (go_complex *dst, go_complex const *a, go_complex const *b);
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void go_complex_div (go_complex *dst, go_complex const *a, go_complex const *b);
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void go_complex_pow (go_complex *dst, go_complex const *a, go_complex const *b);
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void go_complex_add (go_complex *dst, go_complex const *a, go_complex const *b);
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void go_complex_sub (go_complex *dst, go_complex const *a, go_complex const *b);
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char* go_complex_to_stringl (go_complexl const *src, char const *reformat, char const *imformat, char imunit);
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int go_complex_from_stringl (go_complexl *dst, char const *src, char *imunit);
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void                go_complex_to_polarl                (long double *mod,
                                                         long double *angle,
                                                         go_complexl const *src);
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void go_complex_from_polarl (go_complexl *dst, long double mod, long double angle);
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void go_complex_mull (go_complexl *dst, go_complexl const *a, go_complexl const *b);
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void go_complex_divl (go_complexl *dst, go_complexl const *a, go_complexl const *b);
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void go_complex_powl (go_complexl *dst, go_complexl const *a, go_complexl const *b);
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void go_complex_initl (go_complexl *dst, long double re, long double im);
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void go_complex_addl (go_complexl *dst, go_complexl const *a, go_complexl const *b);
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void go_complex_subl (go_complexl *dst, go_complexl const *a, go_complexl const *b);
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