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Scilabヘルプ >> API Scilab > polynomial > 多項式の例

# 多項式の例

### 説明

この例は多項式変数を取得し,Scilabに返す方法を示します.

### ゲートウェイのソース

```int polyExample(char *fname,unsigned long fname_len)
{
SciErr sciErr;
int iType   = 0;
int iRet    = 0;

CheckInputArgument(pvApiCtx, 1, 1);
CheckOutputArgument(pvApiCtx, 0, 1);

if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}

{
char pstVarName[64];
int iLen = 0;

sciErr = getPolyVariableName(pvApiCtx, piAddr, pstVarName, &iLen);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return sciErr.iErr;
}

{
int iNbCoef				= 0;
double* pdblReal	= NULL;
double* pdblImg		= NULL;

{
iRet = getAllocatedSingleComplexPoly(pvApiCtx, piAddr, &iNbCoef, &pdblReal, &pdblImg);
if(iRet)
{
freeAllocatedSingleComplexPoly(pdblReal, pdblImg);
return iRet;
}

sciErr = createComplexMatrixOfPoly(pvApiCtx, nbInputArgument(pvApiCtx) + 1, pstVarName, 1, 1, &iNbCoef, &pdblReal, &pdblImg);
if(sciErr.iErr)
{
freeAllocatedSingleComplexPoly(pdblReal, pdblImg);
printError(&sciErr, 0);
return sciErr.iErr;
}

freeAllocatedSingleComplexPoly(pdblReal, pdblImg);
}
else
{
iRet = getAllocatedSinglePoly(pvApiCtx, piAddr, &iNbCoef, &pdblReal);
if(iRet)
{
freeAllocatedSinglePoly(pdblReal);
return iRet;
}

sciErr = createMatrixOfPoly(pvApiCtx, nbInputArgument(pvApiCtx) + 1, pstVarName, 1, 1, &iNbCoef, &pdblReal);
if(sciErr.iErr)
{
freeAllocatedSinglePoly(pdblReal);
printError(&sciErr, 0);
return sciErr.iErr;
}

freeAllocatedSinglePoly(pdblReal);
}
}
else
{
int iRows           = 0;
int iCols           = 0;
int* piNbCoef       = NULL;
double** pdblReal   = NULL;
double** pdblImg    = NULL;

{
iRet = getAllocatedMatrixOfComplexPoly(pvApiCtx, piAddr, &iRows, &iCols, &piNbCoef, &pdblReal, &pdblImg);
if(iRet)
{
freeAllocatedMatrixOfComplexPoly(iRows, iCols, piNbCoef, pdblReal, pdblImg);
return iRet;
}

sciErr = createComplexMatrixOfPoly(pvApiCtx, nbInputArgument(pvApiCtx) + 1, pstVarName, iRows, iCols, piNbCoef, pdblReal, pdblImg);
if(sciErr.iErr)
{
freeAllocatedMatrixOfComplexPoly(iRows, iCols, piNbCoef, pdblReal, pdblImg);
printError(&sciErr, 0);
return sciErr.iErr;
}

freeAllocatedMatrixOfComplexPoly(iRows, iCols, piNbCoef, pdblReal, pdblImg);
}
else
{
iRet = getAllocatedMatrixOfPoly(pvApiCtx, piAddr, &iRows, &iCols, &piNbCoef, &pdblReal);
if(iRet)
{
freeAllocatedMatrixOfPoly(iRows, iCols, piNbCoef, pdblReal);
return iRet;
}

sciErr = createMatrixOfPoly(pvApiCtx, nbInputArgument(pvApiCtx) + 1, pstVarName, iRows, iCols, piNbCoef, pdblReal);
if(sciErr.iErr)
{
freeAllocatedMatrixOfPoly(iRows, iCols, piNbCoef, pdblReal);
printError(&sciErr, 0);
return sciErr.iErr;
}

freeAllocatedMatrixOfPoly(iRows, iCols, piNbCoef, pdblReal);
}
}

AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
}
else
{
AssignOutputVariable(pvApiCtx, 1) = 0;
}
return 0;
}```

### Scilab テストスクリプト

```a = %s;
b = (2 + 3*%i) * %s;
c = [a, 2*a, 3*a;4*a, 5*a, 6*a];
d = [c + c * %i];
if polyExample(a) <> a then pause, end
if polyExample(b) <> b then pause, end
if polyExample(c) <> c then pause, end
if polyExample(d) <> d then pause, end```
 Report an issue << freeAllocatedSinglePoly polynomial sparse >>