dlartg.h

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extern void v3p_netlib_dlartg_init();
extern int v3p_netlib_dlartg_(
  v3p_netlib_doublereal *f,
  v3p_netlib_doublereal *g,
  v3p_netlib_doublereal *cs,
  v3p_netlib_doublereal *sn,
  v3p_netlib_doublereal *r__
  );