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/*
freesteam - IAPWS-IF97 steam tables library
Copyright (C) 2004-2005 John Pye
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 2
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef FREESTEAM_STEAM_H
#define FREESTEAM_STEAM_H
#include "common.h"
#include <stdio.h>
typedef struct SteamState_R1_struct{
double p, T;
} SteamState_R1;
typedef struct SteamState_R2_struct{
double p, T;
} SteamState_R2;
typedef struct SteamState_R3_struct{
double rho, T;
} SteamState_R3;
typedef struct SteamState_R4_struct{
double T, x;
} SteamState_R4;
typedef struct SteamState_struct{
char region;
union{
SteamState_R1 R1;
SteamState_R2 R2;
SteamState_R3 R3;
SteamState_R4 R4;
} valueR;
} SteamState;
FREESTEAM_DLL int freesteam_region(SteamState S);
FREESTEAM_DLL SteamState freesteam_region1_set_pT(double p, double T);
FREESTEAM_DLL SteamState freesteam_region2_set_pT(double p, double T);
FREESTEAM_DLL SteamState freesteam_region3_set_rhoT(double rho, double T);
FREESTEAM_DLL SteamState freesteam_region4_set_Tx(double T, double x);
FREESTEAM_DLL int freesteam_fprint(FILE *f, SteamState S);
#if 0
# define FREESTEAM_DEBUG(NAME,STATE)\
fprintf(stderr,"%s (%s:%d): %s ",__func__,__FILE__,__LINE__,NAME);\
freesteam_fprint(stderr,S);
#else
# define FREESTEAM_DEBUG(NAME,STATE)
#endif
typedef double SteamPropertyFunction(SteamState S);
FREESTEAM_DLL double freesteam_p(SteamState S);
FREESTEAM_DLL double freesteam_T(SteamState S);
FREESTEAM_DLL double freesteam_rho(SteamState S);
FREESTEAM_DLL double freesteam_v(SteamState S);
FREESTEAM_DLL double freesteam_u(SteamState S);
FREESTEAM_DLL double freesteam_h(SteamState S);
FREESTEAM_DLL double freesteam_s(SteamState S);
FREESTEAM_DLL double freesteam_cp(SteamState S);
FREESTEAM_DLL double freesteam_cv(SteamState S);
FREESTEAM_DLL double freesteam_w(SteamState S);
FREESTEAM_DLL double freesteam_x(SteamState S);
FREESTEAM_DLL double freesteam_mu(SteamState S);
FREESTEAM_DLL double freesteam_k(SteamState S);
#endif
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