- Ajuda do Scilab
- API Scilab
- legacy
- Low level functions
- AssignOutputVariable
- Boolean reading (Scilab gateway)
- Boolean writing (Scilab gateway)
- Boolean sparse reading (Scilab gateway)
- Boolean sparse writing (Scilab gateway)
- CallOverloadFunction
- Check variable dimensions (Scilab gateway)
- CheckInputArgument
- CheckOutputArgument
- Variable Reference (Scilab gateway)
- Variable dimension (Scilab gateway)
- Variable Type (Scilab gateway)
- Variable Complexity (Scilab gateway)
- Matrix Type (Scilab gateway)
- deleteNamedVariable
- Double reading (Scilab gateway)
- Double writing (Scilab gateway)
- getNbInputArgument (Scilab gateway)
- getNbOutputArgument (Scilab gateway)
- Handle reading (Scilab gateway)
- Handle writing (Scilab gateway)
- Integer Precision (Scilab gateway)
- Integer reading (Scilab gateway)
- Integer writing (Scilab gateway)
- nbInputArgument (Scilab gateway)
- Pointer reading (Scilab gateway)
- Pointer writing (Scilab gateway)
- Polynomial Symbolic Variable (Scilab gateway)
- Polynomial reading (Scilab gateway)
- Polynomial writing (Scilab gateway)
- ReturnArguments
- Sparse matrix reading (Scilab gateway)
- Sparse writing (Scilab gateway)
- String reading (Scilab gateway)
- String writing (Scilab gateway)
- UpdateStack
Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
However, this page did not exist in the previous stable version.
Integer reading (Scilab gateway)
How to read matrices of integer in a gateway.
Syntax
Input argument profile:
Signed integer :
SciErr getMatrixOfInteger8(void* _pvCtx, int* _piAddress, int* _piRows, int* _piCols, char** _pcData8)
SciErr getMatrixOfInteger16(void* _pvCtx, int* _piAddress, int* _piRows, int* _piCols, short** _psData16)
SciErr getMatrixOfInteger32(void* _pvCtx, int* _piAddress, int* _piRows, int* _piCols, int** _piData32)
Unsigned integer :
SciErr getMatrixOfUnsignedInteger8(void* _pvCtx, int* _piAddress, int* _piRows, int* _piCols, unsigned char** _pucData8)
SciErr getMatrixOfUnsignedInteger16(void* _pvCtx, int* _piAddress, int* _piRows, int* _piCols, unsigned short** _pusData16)
SciErr getMatrixOfUnsignedInteger32(void* _pvCtx, int* _piAddress, int* _piRows, int* _piCols, unsigned int** _puiData32)
Named variable profile:
Signed integer :
SciErr readNamedMatrixOfInteger8(void* _pvCtx, const char* _pstName, int* _piRows, int* _piCols, char* _pcData8)
SciErr readNamedMatrixOfInteger16(void* _pvCtx, const char* _pstName, int* _piRows, int* _piCols, short* _psData16)
SciErr readNamedMatrixOfInteger32(void* _pvCtx, const char* _pstName, int* _piRows, int* _piCols, int* _piData32)
Unsigned integer :
SciErr readNamedMatrixOfUnsignedInteger8(void* _pvCtx, const char* _pstName, int* _piRows, int* _piCols, unsigned char* _pucData8)
SciErr readNamedMatrixOfUnsignedInteger16(void* _pvCtx, const char* _pstName, int* _piRows, int* _piCols, unsigned short* _pusData16)
SciErr readNamedMatrixOfUnsignedInteger32(void* _pvCtx, const char* _pstName, int* _piRows, int* _piCols, unsigned int* _puiData32)
Arguments
- _pvCtx
Scilab environment pointer, pass in "pvApiCtx" provided by api_scilab.h.
- _piAddress
Address of the Scilab variable.
- _pstName
Name of the variable for "named" functions.
- _piRows
Return number of rows.
- _piCols
Return number of columns.
- _pcData8, _pucData8, _psData16, _pusData16, _piData32, _puiData32
Returns address of array ( size: _piRows * _piCols). For "Named" function, _pcData must be allocated before calling function.
- SciErr
Error structure where is stored errors messages history and first error number.
Description
This help describes how matrices of integer can be handled through the Scilab API.
Gateway Source
#include "api_scilab.h" void* create_output(int _iCoeff, int _iSize, int _iRows, int _iCols, void* _pvDataIn); int read_integer(char *fname,void* pvApiCtx) { SciErr sciErr; //output variable info int iRows8 = 0; int iCols8 = 0; int iRows16 = 0; int iCols16 = 0; int iRows32 = 0; int iCols32 = 0; int iRowsu8 = 0; int iColsu8 = 0; int iRowsu16 = 0; int iColsu16 = 0; int iRowsu32 = 0; int iColsu32 = 0; int iPrec = 0; int* piAddr8 = NULL; int* piAddr16 = NULL; int* piAddr32 = NULL; int* piAddru8 = NULL; int* piAddru16 = NULL; int* piAddru32 = NULL; char* pcData = NULL; short* psData = NULL; int* piData = NULL; unsigned char* pucData = NULL; unsigned short* pusData = NULL; unsigned int* puiData = NULL; char* pcDataOut = NULL; short* psDataOut = NULL; int* piDataOut = NULL; unsigned char* pucDataOut = NULL; unsigned short* pusDataOut = NULL; unsigned int* puiDataOut = NULL; //check input/output arguments count CheckInputArgument(pvApiCtx, 6, 6); CheckOutputArgument(pvApiCtx, 6, 6); //get variable address sciErr = getVarAddressFromPosition(pvApiCtx, 1, &piAddr8); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } sciErr = getVarAddressFromPosition(pvApiCtx, 2, &piAddru8); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } sciErr = getVarAddressFromPosition(pvApiCtx, 3, &piAddr16); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } sciErr = getVarAddressFromPosition(pvApiCtx, 4, &piAddru16); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } sciErr = getVarAddressFromPosition(pvApiCtx, 5, &piAddr32); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } sciErr = getVarAddressFromPosition(pvApiCtx, 6, &piAddru32); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //check variable precision sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddr8, &iPrec); if(sciErr.iErr || iPrec != SCI_INT8) { printError(&sciErr, 0); return 0; } //check variable precision sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddru8, &iPrec); if(sciErr.iErr || iPrec != SCI_UINT8) { printError(&sciErr, 0); return 0; } //check variable precision sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddr16, &iPrec); if(sciErr.iErr || iPrec != SCI_INT16) { printError(&sciErr, 0); return 0; } //check variable precision sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddru16, &iPrec); if(sciErr.iErr || iPrec != SCI_UINT16) { printError(&sciErr, 0); return 0; } //check variable precision sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddr32, &iPrec); if(sciErr.iErr || iPrec != SCI_INT32) { printError(&sciErr, 0); return 0; } //check variable precision sciErr = getMatrixOfIntegerPrecision(pvApiCtx, piAddru32, &iPrec); if(sciErr.iErr || iPrec != SCI_UINT32) { printError(&sciErr, 0); return 0; } //retrieve dimensions and data sciErr = getMatrixOfInteger8(pvApiCtx, piAddr8, &iRows8, &iCols8, &pcData); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //retrieve dimensions and data sciErr = getMatrixOfUnsignedInteger8(pvApiCtx, piAddru8, &iRowsu8, &iColsu8, &pucData); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //retrieve dimensions and data sciErr = getMatrixOfInteger16(pvApiCtx, piAddr16, &iRows16, &iCols16, &psData); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //retrieve dimensions and data sciErr = getMatrixOfUnsignedInteger16(pvApiCtx, piAddru16, &iRowsu16, &iColsu16, &pusData); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //retrieve dimensions and data sciErr = getMatrixOfInteger32(pvApiCtx, piAddr32, &iRows32, &iCols32, &piData); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //retrieve dimensions and data sciErr = getMatrixOfUnsignedInteger32(pvApiCtx, piAddru32, &iRowsu32, &iColsu32, &puiData); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //alloc and fill new variable pcDataOut = (char*)create_output(2, 1, iRows8, iCols8, (void*)pcData); pucDataOut = (unsigned char*)create_output(4, 1, iRowsu8, iColsu8, (void*)pucData); psDataOut = (short*)create_output(8, 2, iRows16, iCols16, (void*)psData); pusDataOut = (unsigned short*)create_output(16, 2, iRowsu16, iColsu16, (void*)pusData); piDataOut = (int*)create_output(32, 4, iRows32, iCols32, (void*)piData); puiDataOut = (unsigned int*)create_output(64, 4, iRowsu32, iColsu32, (void*)puiData); //create new variable sciErr = createMatrixOfInteger8(pvApiCtx, nbInputArgument(pvApiCtx) + 1, iRows8, iCols8, pcDataOut); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //create new variable sciErr = createMatrixOfUnsignedInteger8(pvApiCtx, nbInputArgument(pvApiCtx) + 2, iRowsu8, iColsu8, pucDataOut); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //create new variable sciErr = createMatrixOfInteger16(pvApiCtx, nbInputArgument(pvApiCtx) + 3, iRows16, iCols16, psDataOut); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //create new variable sciErr = createMatrixOfUnsignedInteger16(pvApiCtx, nbInputArgument(pvApiCtx) + 4, iRowsu16, iColsu16, pusDataOut); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //create new variable sciErr = createMatrixOfInteger32(pvApiCtx, nbInputArgument(pvApiCtx) + 5, iRows32, iCols32, piDataOut); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //create new variable sciErr = createMatrixOfUnsignedInteger32(pvApiCtx, nbInputArgument(pvApiCtx) + 6, iRowsu32, iColsu32, puiDataOut); if(sciErr.iErr) { printError(&sciErr, 0); return 0; } //assign allocated variables to Lhs position AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1; AssignOutputVariable(pvApiCtx, 2) = nbInputArgument(pvApiCtx) + 2; AssignOutputVariable(pvApiCtx, 3) = nbInputArgument(pvApiCtx) + 3; AssignOutputVariable(pvApiCtx, 4) = nbInputArgument(pvApiCtx) + 4; AssignOutputVariable(pvApiCtx, 5) = nbInputArgument(pvApiCtx) + 5; AssignOutputVariable(pvApiCtx, 6) = nbInputArgument(pvApiCtx) + 6; return 0; } void* create_output(int _iCoeff, int _iSize, int _iRows, int _iCols, void* _pvDataIn) { int i = 0; void* pvDataOut = (void*)malloc(_iSize * _iRows * _iCols); for(i = 0 ; i < _iRows * _iCols ; i++) { int iVal = 0; memcpy(&iVal, (char*)_pvDataIn + i * _iSize, _iSize); iVal *= _iCoeff; memcpy((char*)pvDataOut + i * _iSize, &iVal, _iSize); } return pvDataOut; }
Scilab test script
a8 = int8([ 1 -2 3 -4 5; .. -6 7 -8 9 -10; .. 11 -12 13 -14 15]); au8 = uint8([ 1 2 3 4 5; .. 6 7 8 9 10; .. 11 12 13 14 15]); a16 = int16([ 1 -2 3 -4 5; .. -6 7 -8 9 -10; .. 11 -12 13 -14 15]); au16 = uint16([ 1 2 3 4 5; .. 6 7 8 9 10; .. 11 12 13 14 15]); a32 = int32([ 1 -2 3 -4 5; .. -6 7 -8 9 -10; .. 11 -12 13 -14 15]); au32 = uint32([ 1 2 3 4 5; .. 6 7 8 9 10; .. 11 12 13 14 15]); [c8, cu8, c16, cu16, c32, cu32] = read_integer(a8, au8, a16, au16, a32, au32); if or(c8 <> a8 * 2) then error("failed"), end if or(cu8 <> au8 * 4) then error("failed"), end if or(c16 <> a16 * 8) then error("failed"), end if or(cu16 <> au16 * 16) then error("failed"), end if or(c32 <> a32 * 32) then error("failed"), end if or(cu32 <> au32 * 64) then error("failed"), end
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