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/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) Bruno Pincon
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
*/
/* PURPOSE
* interface code for some interpolation / approximation
* routines
*/
/*--------------------------------------------------------------------------*/
#include <math.h>
#include <string.h>
#include "interpolation.h"
#include "stack-c.h"
#include "getfastcode.h"
#include "Scierror.h"
#include "localization.h"
/*--------------------------------------------------------------------------*/
int good_order(double x[], int n)
{
/* test if x[i-1] < x[i] */
static int first = 1;
int i;
static double inf;
if ( first )
{
inf = 1.0 / (double) (first - first) ;
first = 0;
}
if (fabs(x[0]) == inf || x[n - 1] == inf)
{
return ( 0 );
}
for ( i = 1 ; i < n ; i++ )
if ( ! (x[i - 1] < x[i]) ) /* form of this test for detecting nan ... */
{
return ( 0 );
}
return ( 1 );
}
/*--------------------------------------------------------------------------*/
/*
* Routines spéciales :
* récupérer une hypermatrice réelle
* récupérer une string scilab sans convertion
* comparer une string scilab et une C string classique
* (elles ne modifient pas les variables correspondantes
* ce qui est fondamental pour que cette interface soit
* passée par référence).
*/
/*--------------------------------------------------------------------------*/
int get_rhs_real_hmat(int num, RealHyperMat *H)
{
int il, il1, il2, il3,/* it, */lw;
lw = num + Top - Rhs;
il = iadr(*Lstk( lw ));
if ( *istk(il) < 0 )
{
il = iadr(*istk(il + 1));
}
if ( *istk(il) != 17 )
{
goto err;
}
else if ( *istk(il + 1) != 3 ) /* a hm mlist must have 3 fields */
{
goto err;
}
/* get the pointers for the 3 fields */
il1 = sadr(il + 6);
il2 = il1 + *istk(il + 3) - 1;
il3 = il1 + *istk(il + 4) - 1;
il1 = iadr(il1);
il2 = iadr(il2);
il3 = iadr(il3);
/* test if the first field is a matrix string with 3 components
* and that the first is "hm" (ie 17 22 in scilab char code)
*/
if ( (*istk(il1) != sci_strings) | ((*istk(il1 + 1)) * (*istk(il1 + 2)) != 3) )
{
goto err;
}
else if ( *istk(il1 + 5) - 1 != 2 ) /* 1 str must have 2 chars */
{
goto err;
}
else if ( *istk(il1 + 8) != 17 || *istk(il1 + 9) != 22 )
{
goto err;
}
/* get the 2d field */
if ( (*istk(il2) != 8) | (*istk(il2 + 3) != 4) )
{
goto err;
}
H->dimsize = (*istk(il2 + 1)) * (*istk(il2 + 2));
H->dims = istk(il2 + 4);
/* get the 3d field */
if ( !( *istk(il3) == 1 && *istk(il3 + 3) == 0) )
{
goto err;
}
H->size = (*istk(il3 + 1)) * (*istk(il3 + 2));
H->R = stk(sadr(il3 + 4));
/* needed for Jpc stuff (putlhsvar) */
Nbvars = Max(Nbvars, num);
C2F(intersci).ntypes[num - 1] = '$';
C2F(intersci).iwhere[num - 1] = *Lstk(lw);
C2F(intersci).lad[num - 1] = 0; /* a voir ? */
return 1;
err:
Scierror(999, _("Wrong type for input argument #%d: Real hypermatrix expected.\n"), num);
return 0;
}
/*--------------------------------------------------------------------------*/
int get_rhs_scalar_string(int num, int *length, int **tabchar)
{
int il, lw;
lw = num + Top - Rhs;
il = iadr(*Lstk( lw ));
if ( *istk(il) < 0 )
{
il = iadr(*istk(il + 1));
}
if ( ! ( *istk(il) == sci_strings && (*istk(il + 1)) * (*istk(il + 2)) == 1 ) )
{
/* we look for a scalar string */
Scierror(999, _("Wrong type for input argument #%d: String expected.\n"), num);
return 0;
}
*length = *istk(il + 5) - 1;
*tabchar = istk(il + 6);
Nbvars = Max(Nbvars, num);
C2F(intersci).ntypes[num - 1] = '$';
C2F(intersci).iwhere[num - 1] = *Lstk(lw);
C2F(intersci).lad[num - 1] = 0;
return 1;
}
/*--------------------------------------------------------------------------*/
static int equal_scistring_and_string(int length, int *scistr, char *str)
{
/* compare a scistring with a classic C string */
int i = 0, res = 0;
if ( (int)strlen(str) != length )
{
return 0;
}
res = 1;
i = 0;
while (res && i < length)
{
res = (scistr[i] == convertAsciiCodeToScilabCode(str[i]));
i++;
}
return (res);
}
/*--------------------------------------------------------------------------*/
int get_type(TableType *Tab, int dim_table, int *scistr, int strlength)
{
int i = 0, found = 0;
while ( !found && i < dim_table )
{
found = equal_scistring_and_string(strlength, scistr, Tab[i].str_type);
i++;
}
if ( found )
{
return ( Tab[i - 1].type );
}
else
{
return ( UNDEFINED );
}
}
/*--------------------------------------------------------------------------*/
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