This file is indexed.

/usr/include/cdd/cddmp.h is in libcdd-dev 094g-5.

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The actual contents of the file can be viewed below.

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/* cddmp.h       (cddlib arithmetic operations using gmp)
   Copyright: Komei Fukuda 2000, fukuda@ifor.math.ethz.ch
   Version 0.94g, March 23, 2012
*/

/* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef  __CDDMP_H
#define  __CDDMP_H
#endif  /* __CDDMP_H */

/**********************************/
/*         MACROS                 */
/* dependent on mp implementation */
/**********************************/

#if defined GMPRATIONAL
 #include "gmp.h"
 #define dd_ARITHMETIC "GMP rational"
 #define dd_init(a)              mpq_init(a)     
 #define dd_clear(a)             mpq_clear(a)     
 #define dd_set(a, b)            mpq_set(a,b)     
 #define dd_set_si(a, b)         ddd_mpq_set_si(a,b)  /* defined in cddgmp.c */
 #define dd_set_si2(a, b, c)     mpq_set_si(a,b,c)    /* gmp 3.1 or higher */
 #define dd_add(a, b, c)         mpq_add(a,b,c)
 #define dd_sub(a, b, c)         mpq_sub(a,b,c)
 #define dd_mul(a, b, c)         mpq_mul(a,b,c)
 #define dd_div(a, b, c)         mpq_div(a,b,c)
 #define dd_neg(a, b)            mpq_neg(a,b)
 #define dd_inv(a, b)            mpq_inv(a,b)
 #define dd_cmp(a, b)            mpq_cmp(a,b)  
    /* returns pos if a>b, 0 if a=b, negative if a<b */
 #define dd_sgn(a)               mpq_sgn(a)
    /* returns nonzero if equal.  much faster than mpq_cmp. */
 #define dd_get_d(a)             mpq_get_d(a)     
#elif defined GMPFLOAT
 #include "gmp.h"
 #define dd_ARITHMETIC "GMP float"
 #define dd_init(a)              mpf_init(a)     
 #define dd_clear(a)             mpf_clear(a)     
 #define dd_set(a, b)            mpf_set(a,b)     
 #define dd_set_d(a, b)          mpf_set_d(a,b)     
 #define dd_set_si(a, b)         mpf_set_si(a,b)     
 #define dd_set_si2(a, b, c)     mpf_set_si(a,b,c)    /* gmp 3.1 or higher */
 #define dd_add(a, b, c)         mpf_add(a,b,c)
 #define dd_sub(a, b, c)         mpf_sub(a,b,c)
 #define dd_mul(a, b, c)         mpf_mul(a,b,c)
 #define dd_div(a, b, c)         mpf_div(a,b,c)
 #define dd_neg(a, b)            mpf_neg(a,b)
 #define dd_inv(a, b)            mpf_inv(a,b)
 #define dd_cmp(a, b)            mpf_cmp(a,b)  
    /* returns pos if a>b, 0 if a=b, negative if a<b */
 #define dd_sgn(a)               mpf_sgn(a)
 #define dd_get_d(a)             mpf_get_d(a)     
#else /* built-in C double */
 #define dd_ARITHMETIC "C double"
 #define dd_CDOUBLE
 #define dd_init(a)              ddd_init(a)     
 #define dd_clear(a)             ddd_clear(a)     
 #define dd_set(a, b)            ddd_set(a,b)     
 #define dd_set_si(a, b)         ddd_set_si(a,b)     
 #define dd_set_si2(a, b, c)     ddd_set_si2(a,b,c)  
 #define dd_set_d(a, b)          ddd_set_d(a,b)     
 #define dd_add(a, b, c)         ddd_add(a,b,c)
 #define dd_sub(a, b, c)         ddd_sub(a,b,c)
 #define dd_mul(a, b, c)         ddd_mul(a,b,c)
 #define dd_div(a, b, c)         ddd_div(a,b,c)
 #define dd_neg(a, b)            ddd_neg(a,b)
 #define dd_inv(a, b)            ddd_inv(a,b)
 #define dd_cmp(a, b)            ddd_cmp(a,b)  
    /* returns pos if a>b, 0 if a=b, negative if a<b */
 #define dd_sgn(a)               ddd_sgn(a)
 #define dd_get_d(a)             ddd_get_d(a)     
#endif


#if defined GMPRATIONAL
 typedef mpq_t mytype;
#elif defined GMPFLOAT
 typedef mpf_t mytype;
#else /* built-in C double */
 typedef double mytype[1];
#endif

#if defined(__cplusplus)
extern "C" {
#endif

void ddd_mpq_set_si(mytype,signed long);
void ddd_init(mytype);  
void ddd_clear(mytype);
void ddd_set(mytype,mytype);
void ddd_set_d(mytype,double);
void ddd_set_si(mytype,signed long);
void ddd_set_si2(mytype,signed long, unsigned long);
void ddd_add(mytype,mytype,mytype);
void ddd_sub(mytype,mytype,mytype);
void ddd_mul(mytype,mytype,mytype);
void ddd_div(mytype,mytype,mytype);
void ddd_neg(mytype,mytype);
void ddd_inv(mytype,mytype);
int ddd_cmp(mytype,mytype);
int ddd_sgn(mytype);
double ddd_get_d(mytype);
void ddd_mpq_set_si(mytype,signed long);

void dd_set_global_constants(void);
void dd_free_global_constants(void);  /* 094d */

#if defined(__cplusplus)
}
#endif

/* end of  cddmp.h  */