12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970 |
- /* specfunc/gsl_sf_lambert.h
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001 Gerard Jungman
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- /* Author: G. Jungman */
- #ifndef __GSL_SF_LAMBERT_H__
- #define __GSL_SF_LAMBERT_H__
- #include "gsl_sf_result.h"
- #undef __BEGIN_DECLS
- #undef __END_DECLS
- #ifdef __cplusplus
- # define __BEGIN_DECLS extern "C" {
- # define __END_DECLS }
- #else
- # define __BEGIN_DECLS /* empty */
- # define __END_DECLS /* empty */
- #endif
- __BEGIN_DECLS
- /* Lambert's Function W_0(x)
- *
- * W_0(x) is the principal branch of the
- * implicit function defined by W e^W = x.
- *
- * -1/E < x < \infty
- *
- * exceptions: GSL_EMAXITER;
- */
- int gsl_sf_lambert_W0_e(double x, gsl_sf_result * result);
- double gsl_sf_lambert_W0(double x);
- /* Lambert's Function W_{-1}(x)
- *
- * W_{-1}(x) is the second real branch of the
- * implicit function defined by W e^W = x.
- * It agrees with W_0(x) when x >= 0.
- *
- * -1/E < x < \infty
- *
- * exceptions: GSL_MAXITER;
- */
- int gsl_sf_lambert_Wm1_e(double x, gsl_sf_result * result);
- double gsl_sf_lambert_Wm1(double x);
- __END_DECLS
- #endif /* __GSL_SF_LAMBERT_H__ */
|