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ModelicaStandardTables.c
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ModelicaStandardTables.c
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/* ModelicaStandardTables.c - External table functions
Copyright (C) 2013-2021, Modelica Association and contributors
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* Implementation of external functions for table computation
in the Modelica Standard Library:
Modelica.Blocks.Sources.CombiTimeTable
Modelica.Blocks.Tables.CombiTable1Ds
Modelica.Blocks.Tables.CombiTable1Dv
Modelica.Blocks.Tables.CombiTable2Ds
Modelica.Blocks.Tables.CombiTable2Dv
Changelog:
Jan. 31, 2022: by Hans Olsson
Added better support for one-sided derivatives of 2d-tables.
The idea is that when we are computing the derivative at a boundary
in the table we should consider the der-value to choose side.
This is less important for 1d-tables and thus ignored in those cases.
(ticket #3893 )
Nov. 12, 2021: by Thomas Beutlich
Fixed derivatives in CombiTable2D for one-sided extrapolation
by constant continuation (ticket #3894)
Dec. 22, 2020: by Thomas Beutlich
Added reading of CSV files (ticket #1153)
May 27, 2020: by Thomas Beutlich
Fixed invalid memory access in error messages of
isValidCombiTimeTable and isValidCombiTable1D (ticket #3562)
Nov. 01, 2019: by Thomas Beutlich
Added univariate Makima-spline interpolation (ticket #1039)
Aug. 03, 2019: by Thomas Beutlich
Added second derivatives (ticket #2901)
Oct. 04, 2018: by Thomas Beutlich, ESI ITI GmbH
Fixed event detection of CombiTimeTable (ticket #2724)
Fixed left extrapolation of CombiTimeTable (ticket #2724)
Jan. 03, 2018: by Thomas Beutlich, ESI ITI GmbH
Improved reentrancy of CombiTimeTable (ticket #2411)
Oct. 23, 2017: by Thomas Beutlich, ESI ITI GmbH
Utilized non-fatal hash insertion, called by HASH_ADD_KEYPTR
in function readTable (ticket #2097)
Aug. 25, 2017: by Thomas Beutlich, ESI ITI GmbH
Added support for extrapolation in CombiTable2D (ticket #1839)
Apr. 24, 2017: by Thomas Beutlich, ESI ITI GmbH
Added functions to retrieve minimum and maximum abscissa
values of CombiTable2D (ticket #2244)
Apr. 15, 2017: by Thomas Beutlich, ESI ITI GmbH
Added support for time event generation (independent of
smoothness) in CombiTimeTable (ticket #2080)
Apr. 11, 2017: by Thomas Beutlich, ESI ITI GmbH
Revised initialization of CombiTimeTable, CombiTable1D
and CombiTable2D (ticket #1899)
- Already read table in the initialization functions
Apr. 07, 2017: by Thomas Beutlich, ESI ITI GmbH
Added support for shift time (independent of start time)
in CombiTimeTable (ticket #1771)
Apr. 05, 2017: by Thomas Beutlich, ESI ITI GmbH
Fixed extrapolation of CombiTimeTable if simulation start
time equals the maximum time of the table (ticket #2233)
Mar. 08, 2017: by Thomas Beutlich, ESI ITI GmbH
Moved file I/O functions to ModelicaIO (ticket #2192)
Feb. 25, 2017: by Thomas Beutlich, ESI ITI GmbH
Added support for extrapolation in CombiTable1D (ticket #1839)
Added functions to retrieve minimum and maximum abscissa
values of CombiTable1D (ticket #2120)
Aug. 10, 2016: by Thomas Beutlich, ESI ITI GmbH
Fixed event detection of CombiTimeTable for restarted
simulation (ticket #2040)
Fixed tracing time events (DEBUG_TIME_EVENTS) of CombiTimeTable
for negative simulation time
Dec. 16, 2015: by Thomas Beutlich, ITI GmbH
Added univariate Steffen-spline interpolation (ticket #1814)
Nov. 25, 2015: by Thomas Beutlich, ITI GmbH
Added support of struct variables of MATLAB MAT-files
(ticket #1840)
Nov. 16, 2015: by Thomas Beutlich, ITI GmbH
Fixed support of 2x3 and 3x2 2D tables with spline
interpolation (ticket #1820)
Nov. 03, 2015: by Thomas Beutlich, ITI GmbH
Added range checks for column indices of CombiTimeTable and
CombiTable1D (ticket #1816)
Aug. 31, 2015: by Thomas Beutlich, ITI GmbH
Fixed event detection of CombiTimeTable when using a fixed time
step integrator with a step size greater than the event
resolution of the table (ticket #1768)
May 11, 2015: by Thomas Beutlich, ITI GmbH
Added univariate Fritsch-Butland-spline interpolation
(ticket #1717)
Apr. 16, 2015: by Thomas Beutlich, ITI GmbH
Fixed event detection of CombiTimeTable with scaled time
(ticket #1627)
Mar. 18, 2015: by Thomas Beutlich, ITI GmbH
Fixed poor performance of readMatTable for MATLAB MAT-files with
compressed array streams and large (> 1e5) number of rows
(ticket #1682)
Jan. 02, 2015: by Thomas Beutlich, ITI GmbH
Fixed event detection of CombiTimeTable with non-zero start time
(ticket #1619)
Aug. 22, 2014: by Thomas Beutlich, ITI GmbH
Fixed multi-threaded access of common/shared table arrays
(ticket #1556)
Aug. 07, 2014: by Thomas Beutlich, ITI GmbH
Added pure C implementation of common/shared table arrays
(ticket #1550)
May 21, 2014: by Thomas Beutlich, ITI GmbH
Fixed bivariate Akima-spline extrapolation (ticket #1465)
Improved error message in case of trailing numbers when parsing
a line of a text file (ticket #1494)
Oct. 17, 2013: by Thomas Beutlich, ITI GmbH
Added support of 2D tables that actually degrade to 1D tables
(ticket #1307)
Sep. 05, 2013: by Thomas Beutlich, ITI GmbH
Fixed ANSI-C compliance (ticket #1263)
Fixed reading table files with Windows line endings on Linux
(ticket #1264)
Apr. 09, 2013: by Thomas Beutlich, ITI GmbH
Implemented a first version
*/
#include "ModelicaStandardTables.h"
#include "ModelicaIO.h"
#include "ModelicaUtilities.h"
#if defined(TABLE_SHARE) && !defined(NO_FILE_SYSTEM)
#include "stdint_wrap.h"
#define HASH_NO_STDINT 1
#define uthash_strlen(s) key_strlen(s)
#define HASH_NONFATAL_OOM 1
#include "uthash.h"
#include "gconstructor.h"
#endif
#include <float.h>
#include <math.h>
#include <string.h>
#if !defined(NO_FILE_SYSTEM)
/* The standard way to detect POSIX is to check _POSIX_VERSION,
* which is defined in <unistd.h>
*/
#if defined(__unix__) || defined(__linux__) || defined(__APPLE_CC__)
#include <unistd.h>
#endif
#if !defined(_POSIX_) && defined(_POSIX_VERSION)
#define _POSIX_ 1
#endif
#endif
/* ----- Interface enumerations ----- */
enum Smoothness {
LINEAR_SEGMENTS = 1,
CONTINUOUS_DERIVATIVE,
CONSTANT_SEGMENTS,
FRITSCH_BUTLAND_MONOTONE_C1,
STEFFEN_MONOTONE_C1,
MAKIMA_C1,
AKIMA_C1 = CONTINUOUS_DERIVATIVE
};
enum Extrapolation {
HOLD_LAST_POINT = 1,
LAST_TWO_POINTS,
PERIODIC,
NO_EXTRAPOLATION
};
enum TimeEvents {
UNDEFINED = 0,
ALWAYS,
AT_DISCONT,
NO_TIMEEVENTS
};
/* ----- Internal enumerations ----- */
enum PointInterval {
LEFT = -1,
IN_TABLE = 0,
RIGHT = 1
};
enum TableSource {
TABLESOURCE_MODEL = 1,
TABLESOURCE_FILE,
TABLESOURCE_FUNCTION,
TABLESOURCE_FUNCTION_TRANSPOSE
};
enum CleanUp {
NO_CLEANUP = 0,
DO_CLEANUP
};
/* ----- Internal table memory ----- */
/* 3 (of 4) 1D cubic Hermite spline coefficients (per interval) */
typedef double CubicHermite1D[3];
/* 15 (of 16) 2D cubic Hermite spline coefficients (per grid) */
typedef double CubicHermite2D[15];
/* Left and right interval indices (per interval) */
typedef size_t Interval[2];
typedef struct CombiTimeTable {
char* key; /* Key consisting of concatenated names of file and table */
double* table; /* Table values */
size_t nRow; /* Number of rows of table */
size_t nCol; /* Number of columns of table */
size_t last; /* Last accessed row index of table */
enum Smoothness smoothness; /* Smoothness kind */
enum Extrapolation extrapolation; /* Extrapolation kind */
enum TableSource source; /* Source kind */
enum TimeEvents timeEvents; /* Kind of time event handling */
int* cols; /* Columns of table to be interpolated */
size_t nCols; /* Number of columns of table to be interpolated */
double startTime; /* Start time of inter-/extrapolation */
double shiftTime; /* Shift time of first table column */
CubicHermite1D* spline; /* Pre-calculated cubic Hermite spline coefficients,
only used if smoothness is AKIMA_C1 or MAKIMA_C1 or
FRITSCH_BUTLAND_MONOTONE_C1 or STEFFEN_MONOTONE_C1 */
size_t nEvent; /* Time event counter, discrete */
double preNextTimeEvent; /* Time of previous time event, discrete */
double preNextTimeEventCalled; /* Time of previous call of
ModelicaStandardTables_CombiTimeTable_nextTimeEvent, discrete */
size_t maxEvents; /* Maximum number of time events (per period/cycle) */
size_t eventInterval; /* Event interval marker, discrete,
In case of periodic extrapolation this is the current event interval,
otherwise it is the next event interval. */
double tOffset; /* Time offset, calculated by floor function, discrete,
only used if extrapolation is PERIODIC */
Interval* intervals; /* Event interval indices */
} CombiTimeTable;
typedef struct CombiTable1D {
char* key; /* Key consisting of concatenated names of file and table */
double* table; /* Table values */
size_t nRow; /* Number of rows of table */
size_t nCol; /* Number of columns of table */
size_t last; /* Last accessed row index of table */
enum Smoothness smoothness; /* Smoothness kind */
enum Extrapolation extrapolation; /* Extrapolation kind */
enum TableSource source; /* Source kind */
int* cols; /* Columns of table to be interpolated */
size_t nCols; /* Number of columns of table to be interpolated */
CubicHermite1D* spline; /* Pre-calculated cubic Hermite spline coefficients,
only used if smoothness is AKIMA_C1 or MAKIMA_C1 or
FRITSCH_BUTLAND_MONOTONE_C1 or STEFFEN_MONOTONE_C1 */
} CombiTable1D;
typedef struct CombiTable2D {
char* key; /* Key consisting of concatenated names of file and table */
double* table; /* Table values */
size_t nRow; /* Number of rows of table */
size_t nCol; /* Number of columns of table */
size_t last1; /* Last accessed row index of table */
size_t last2; /* Last accessed column index of table */
enum Smoothness smoothness; /* Smoothness kind */
enum Extrapolation extrapolation; /* Extrapolation kind */
enum TableSource source; /* Source kind */
CubicHermite2D* spline; /* Pre-calculated cubic Hermite spline coefficients,
only used if smoothness is AKIMA_C1 */
} CombiTable2D;
/* ----- Internal constants ----- */
#if !defined(_EPSILON)
#define _EPSILON (1e-10)
#endif
#if !defined(MAX_TABLE_DIMENSIONS)
#define MAX_TABLE_DIMENSIONS (3)
#endif
/* ----- Internal shortcuts ----- */
#define IDX(i, j, n) ((i)*(n) + (j))
#define TABLE(i, j) table[IDX(i, j, nCol)]
#define TABLE_ROW0(j) table[j]
#define TABLE_COL0(i) table[(i)*nCol]
#define LINEAR(u, u0, u1, y0, y1) \
do {\
y = (y0) + ((y1) - (y0))*((u) - (u0))/((u1) - (u0)); \
} while(0)
/*
LINEAR(u0, ...) -> y0
LINEAR(u1, ...) -> y1
*/
#define LINEAR_SLOPE(y0, dy_du, du) \
do {\
y = (y0) + (dy_du)*(du); \
} while(0)
#define BILINEAR(u1, u2) \
do {\
const double u10 = TABLE_COL0(last1 + 1); \
const double u11 = TABLE_COL0(last1 + 2); \
const double u20 = TABLE_ROW0(last2 + 1); \
const double u21 = TABLE_ROW0(last2 + 2); \
const double y00 = TABLE(last1 + 1, last2 + 1); \
const double y01 = TABLE(last1 + 1, last2 + 2); \
const double y10 = TABLE(last1 + 2, last2 + 1); \
const double y11 = TABLE(last1 + 2, last2 + 2); \
const double tmp = ((u2) - u20)/(u20 - u21); \
y = y00 + tmp*(y00 - y01) + ((u1) - u10)/(u10 - u11)* \
((1 + tmp)*(y00 - y10) + tmp*(y11 - y01)); \
} while(0)
/*
BILINEAR(u10, u20, ...) -> y00
BILINEAR(u10, u21, ...) -> y01
BILINEAR(u11, u20, ...) -> y10
BILINEAR(u11, u21, ...) -> y11
*/
#define BILINEAR_DER(u1, u2) \
do {\
const double u10 = TABLE_COL0(last1 + 1); \
const double u11 = TABLE_COL0(last1 + 2); \
const double u20 = TABLE_ROW0(last2 + 1); \
const double u21 = TABLE_ROW0(last2 + 2); \
const double y00 = TABLE(last1 + 1, last2 + 1); \
const double y01 = TABLE(last1 + 1, last2 + 2); \
const double y10 = TABLE(last1 + 2, last2 + 1); \
const double y11 = TABLE(last1 + 2, last2 + 2); \
der_y = der_u1*(u21*(y10 - y00) + u20*(y01 - y11) + \
(u2)*(y00 - y01 - y10 + y11)); \
der_y += der_u2*(u11*(y01 - y00) + u10*(y10 - y11) + \
(u1)*(y00 - y01 - y10 + y11)); \
der_y /= (u10 - u11); \
der_y /= (u20 - u21); \
} while(0)
#define BILINEAR_DER2(u1, u2) \
do {\
const double u10 = TABLE_COL0(last1 + 1); \
const double u11 = TABLE_COL0(last1 + 2); \
const double u20 = TABLE_ROW0(last2 + 1); \
const double u21 = TABLE_ROW0(last2 + 2); \
const double y00 = TABLE(last1 + 1, last2 + 1); \
const double y01 = TABLE(last1 + 1, last2 + 2); \
const double y10 = TABLE(last1 + 2, last2 + 1); \
const double y11 = TABLE(last1 + 2, last2 + 2); \
der2_y = der2_u1*(u21*(y10 - y00) + u20*(y01 - y11) + \
(u2)*(y00 - y01 - y10 + y11)); \
der2_y += der2_u2*(u11*(y01 - y00) + u10*(y10 - y11) + \
(u1)*(y00 - y01 - y10 + y11)); \
der2_y += 2*der_u1*der_u2*(y00 - y01 - y10 + y11); \
der2_y /= (u10 - u11); \
der2_y /= (u20 - u21); \
} while(0)
#if defined(TABLE_SHARE) && !defined(NO_FILE_SYSTEM)
typedef struct TableShare {
char* key; /* Key consisting of concatenated names of file and table */
size_t refCount; /* Reference counter */
size_t nRow; /* Number of rows of table */
size_t nCol; /* Number of columns of table */
double* table; /* Table values */
UT_hash_handle hh; /* Hashable structure */
} TableShare;
/* ----- Static variables ----- */
static TableShare* tableShare = NULL;
#if defined(_POSIX_) && !defined(NO_MUTEX)
#include <pthread.h>
#if defined(G_HAS_CONSTRUCTORS)
static pthread_mutex_t m;
G_DEFINE_CONSTRUCTOR(initializeMutex)
static void initializeMutex(void) {
if (pthread_mutex_init(&m, NULL) != 0) {
ModelicaError("Initialization of mutex failed\n");
}
}
G_DEFINE_DESTRUCTOR(destroyMutex)
static void destroyMutex(void) {
if (pthread_mutex_destroy(&m) != 0) {
ModelicaError("Destruction of mutex failed\n");
}
}
#else
static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
#endif
#define MUTEX_LOCK() pthread_mutex_lock(&m)
#define MUTEX_UNLOCK() pthread_mutex_unlock(&m)
#elif defined(_WIN32) && defined(G_HAS_CONSTRUCTORS)
#if !defined(WIN32_LEAN_AND_MEAN)
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
static CRITICAL_SECTION cs;
#ifdef G_DEFINE_CONSTRUCTOR_NEEDS_PRAGMA
#pragma G_DEFINE_CONSTRUCTOR_PRAGMA_ARGS(ModelicaStandardTables_initializeCS)
#endif
G_DEFINE_CONSTRUCTOR(ModelicaStandardTables_initializeCS)
static void ModelicaStandardTables_initializeCS(void) {
InitializeCriticalSection(&cs);
}
#ifdef G_DEFINE_DESTRUCTOR_NEEDS_PRAGMA
#pragma G_DEFINE_DESTRUCTOR_PRAGMA_ARGS(ModelicaStandardTables_deleteCS)
#endif
G_DEFINE_DESTRUCTOR(ModelicaStandardTables_deleteCS)
static void ModelicaStandardTables_deleteCS(void) {
DeleteCriticalSection(&cs);
}
#define MUTEX_LOCK() EnterCriticalSection(&cs)
#define MUTEX_UNLOCK() LeaveCriticalSection(&cs)
#else
#define MUTEX_LOCK()
#define MUTEX_UNLOCK()
#endif
#endif
/* ----- Function declarations ----- */
extern int usertab(char* tableName, int nipo, int dim[], int* colWise,
double** table);
/* Define tables by statically storing them in function usertab.
This function can be adapted by the user to his/her needs.
-> tableName: Name of table
-> nipo : = 0: time-table required (time interpolation)
= 1: 1D-table required
= 2: 2D-table required
<- dim: Actual values of dimensions
<- colWise: = 0: table stored row-wise (row_1, row_2, ..., row_n)
= 1: table stored column-wise (column_1, column_2, ...)
<- table: Pointer to vector containing a matrix with dimensions "dim"
<- RETURN: = 0: No error
= 1: An error occurred. An error message is printed from usertab.
*/
static int isNearlyEqual(double x, double y);
/* Compare two floating-point numbers by threshold _EPSILON */
static size_t findRowIndex(const double* table, size_t nRow, size_t nCol,
size_t last, double x);
/* Find the row index i using binary search such that
* i + 1 < nRow
* table[i*nCol] <= x
* table[(i + 1)*nCol] > x for i + 2 < nRow
*/
static size_t findRowIndex2(const double* table, size_t nRow, size_t nCol,
size_t last, double x, double dx);
/* Using dx as tie-breaker if table[i*nCol] == x to treat x as x+dx*eps */
static size_t findColIndex(_In_ const double* table, size_t nCol, size_t last,
double x) MODELICA_NONNULLATTR;
/* Same as findRowIndex but works on columns */
static size_t findColIndex2(_In_ const double* table, size_t nCol, size_t last,
double x, double dx) MODELICA_NONNULLATTR;
/* Same as findRowIndex2 but works on columns */
static int findLess(double x, double dx, double val) {
return x<val || (x==val && dx<0);
}
static int isValidName(_In_z_ const char* name) MODELICA_NONNULLATTR;
/* Check, whether a file or table name is valid */
static int isValidCombiTimeTable(CombiTimeTable* tableID,
_In_z_ const char* tableName, enum CleanUp cleanUp);
/* Check, whether a CombiTimeTable is well parameterized */
static int isValidCombiTable1D(CombiTable1D* tableID,
_In_z_ const char* tableName, enum CleanUp cleanUp);
/* Check, whether a CombiTable1D is well parameterized */
static int isValidCombiTable2D(CombiTable2D* tableID,
_In_z_ const char* tableName, enum CleanUp cleanUp);
/* Check, whether a CombiTable2D is well parameterized */
static enum TableSource getTableSource(_In_z_ const char* fileName,
_In_z_ const char* tableName) MODELICA_NONNULLATTR;
/* Determine table source (file, model or "usertab" function) from table
and file names
*/
static void transpose(_Inout_ double* table, size_t nRow, size_t nCol) MODELICA_NONNULLATTR;
/* Cycle-based in-place array transposition */
#if defined(TABLE_SHARE) && !defined(NO_FILE_SYSTEM)
static size_t key_strlen(_In_z_ const char *s);
/* Special strlen for key consisting of concatenated names of file and table */
#endif
#if defined(TABLE_SHARE) && !defined(NO_FILE_SYSTEM)
#define READ_RESULT TableShare*
#else
#define READ_RESULT double*
#endif
static READ_RESULT readTable(_In_z_ const char* fileName, _In_z_ const char* tableName,
_Inout_ size_t* nRow, _Inout_ size_t* nCol, int verbose,
int force, _In_z_ const char* delimiter,
int nHeaderLines) MODELICA_NONNULLATTR;
/* Read a table from a text or MATLAB MAT-file
<- RETURN: Pointer to TableShare structure or
pointer to array (row-wise storage) of table values
*/
static CubicHermite1D* akimaSpline1DInit(_In_ const double* table, size_t nRow,
size_t nCol, _In_ const int* cols,
size_t nCols) MODELICA_NONNULLATTR;
/* Calculate the coefficients for univariate cubic Hermite spline
interpolation with the Akima slope approximation
<- RETURN: Pointer to array of coefficients
*/
static CubicHermite1D* makimaSpline1DInit(_In_ const double* table, size_t nRow,
size_t nCol, _In_ const int* cols,
size_t nCols) MODELICA_NONNULLATTR;
/* Calculate the coefficients for univariate cubic Hermite spline
interpolation with the modified Akima slope approximation
<- RETURN: Pointer to array of coefficients
*/
static CubicHermite1D* fritschButlandSpline1DInit(_In_ const double* table,
size_t nRow, size_t nCol,
_In_ const int* cols,
size_t nCols) MODELICA_NONNULLATTR;
/* Calculate the coefficients for univariate cubic Hermite spline
interpolation with the Fritsch-Butland slope approximation
<- RETURN: Pointer to array of coefficients
*/
static CubicHermite1D* steffenSpline1DInit(_In_ const double* table,
size_t nRow, size_t nCol,
_In_ const int* cols,
size_t nCols) MODELICA_NONNULLATTR;
/* Calculate the coefficients for univariate cubic Hermite spline
interpolation with the Steffen slope approximation
<- RETURN: Pointer to array of coefficients
*/
static void spline1DClose(CubicHermite1D** spline);
/* Free allocated memory of the 1D cubic Hermite spline coefficients */
static CubicHermite2D* spline2DInit(_In_ const double* table, size_t nRow,
size_t nCol) MODELICA_NONNULLATTR;
/* Calculate the coefficients for bivariate cubic Hermite spline
interpolation with the Akima algorithm
<- RETURN: Pointer to array of coefficients
*/
static void spline2DClose(CubicHermite2D** spline);
/* Free allocated memory of the 2D cubic Hermite spline coefficients */
/* ----- Interface functions ----- */
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wtautological-compare"
#endif
void* ModelicaStandardTables_CombiTimeTable_init(_In_z_ const char* tableName,
_In_z_ const char* fileName,
_In_ double* table, size_t nRow,
size_t nColumn,
double startTime,
_In_ int* columns,
size_t nCols, int smoothness,
int extrapolation) {
return ModelicaStandardTables_CombiTimeTable_init2(fileName,
tableName, table, nRow, nColumn, startTime, columns, nCols, smoothness,
extrapolation, startTime, ALWAYS, 1 /* verbose */);
}
void* ModelicaStandardTables_CombiTimeTable_init2(_In_z_ const char* fileName,
_In_z_ const char* tableName,
_In_ double* table, size_t nRow,
size_t nColumn,
double startTime,
_In_ int* columns,
size_t nCols, int smoothness,
int extrapolation,
double shiftTime,
int timeEvents,
int verbose) {
return ModelicaStandardTables_CombiTimeTable_init3(fileName,
tableName, table, nRow, nColumn, startTime, columns, nCols, smoothness,
extrapolation, shiftTime, timeEvents, verbose, ",", 0);
}
void* ModelicaStandardTables_CombiTimeTable_init3(_In_z_ const char* fileName,
_In_z_ const char* tableName,
_In_ double* table, size_t nRow,
size_t nColumn,
double startTime,
_In_ int* columns,
size_t nCols, int smoothness,
int extrapolation,
double shiftTime,
int timeEvents,
int verbose,
_In_z_ const char* delimiter,
int nHeaderLines) {
CombiTimeTable* tableID;
#if defined(TABLE_SHARE) && !defined(NO_FILE_SYSTEM)
TableShare* file = NULL;
char* keyFile = NULL;
#endif
double* tableFile = NULL;
size_t nRowFile = 0;
size_t nColFile = 0;
enum TableSource source = getTableSource(fileName, tableName);
/* Read table from file before any other heap allocation */
if (TABLESOURCE_FILE == source) {
#if defined(TABLE_SHARE) && !defined(NO_FILE_SYSTEM)
file = readTable(fileName, tableName, &nRowFile, &nColFile, verbose, 0, delimiter, nHeaderLines);
if (NULL != file) {
keyFile = file->key;
tableFile = file->table;
}
else {
return NULL;
}
#else
tableFile = readTable(fileName, tableName, &nRowFile, &nColFile, verbose, 0, delimiter, nHeaderLines);
if (NULL == tableFile) {
return NULL;
}
#endif
}
tableID = (CombiTimeTable*)calloc(1, sizeof(CombiTimeTable));
if (NULL == tableID) {
#if defined(TABLE_SHARE) && !defined(NO_FILE_SYSTEM)
if (NULL != file) {
MUTEX_LOCK();
if (--file->refCount == 0) {
ModelicaIO_freeRealTable(file->table);
free(file->key);
HASH_DEL(tableShare, file);
free(file);
}
MUTEX_UNLOCK();
}
#else
if (NULL != tableFile) {
free(tableFile);
}
#endif
ModelicaError("Memory allocation error\n");
return NULL;
}
tableID->smoothness = (enum Smoothness)smoothness;
tableID->extrapolation = (enum Extrapolation)extrapolation;
tableID->timeEvents = (enum TimeEvents)timeEvents;
tableID->nCols = nCols;
tableID->startTime = startTime;
tableID->shiftTime = shiftTime;
tableID->preNextTimeEvent = -DBL_MAX;
tableID->preNextTimeEventCalled = -DBL_MAX;
tableID->source = source;
switch (tableID->source) {
case TABLESOURCE_FILE:
#if defined(TABLE_SHARE) && !defined(NO_FILE_SYSTEM)
tableID->key = keyFile;
#else
{
size_t lenFileName = strlen(fileName);
tableID->key = (char*)malloc((lenFileName + strlen(tableName) + 2)*sizeof(char));
if (NULL != tableID->key) {
strcpy(tableID->key, fileName);
strcpy(tableID->key + lenFileName + 1, tableName);
}
}
#endif
tableID->nRow = nRowFile;
tableID->nCol = nColFile;
tableID->table = tableFile;
break;
case TABLESOURCE_MODEL:
tableID->nRow = nRow;
tableID->nCol = nColumn;
#if defined(NO_TABLE_COPY)
tableID->table = table;
#else
tableID->table = (double*)malloc(nRow*nColumn*sizeof(double));
if (NULL != tableID->table) {
memcpy(tableID->table, table, nRow*nColumn*sizeof(double));
}
else {
ModelicaStandardTables_CombiTimeTable_close(tableID);
ModelicaError("Memory allocation error\n");
return NULL;
}
#endif
break;
case TABLESOURCE_FUNCTION: {
int colWise;
int dim[MAX_TABLE_DIMENSIONS];
if (usertab((char*)tableName, 0 /* Time-interpolation */, dim,
&colWise, &tableID->table) == 0) {
if (0 == colWise) {
tableID->nRow = (size_t)dim[0];
tableID->nCol = (size_t)dim[1];
}
else {
/* Need to transpose */
double* tableT = (double*)malloc(
(size_t)dim[0]*(size_t)dim[1]*sizeof(double));
if (NULL != tableT) {
memcpy(tableT, tableID->table,
(size_t)dim[0]*(size_t)dim[1]*sizeof(double));
tableID->table = tableT;
tableID->nRow = (size_t)dim[1];
tableID->nCol = (size_t)dim[0];
tableID->source = TABLESOURCE_FUNCTION_TRANSPOSE;
transpose(tableID->table, tableID->nRow, tableID->nCol);
}
else {
ModelicaStandardTables_CombiTimeTable_close(tableID);
ModelicaError("Memory allocation error\n");
return NULL;
}
}
}
break;
}
case TABLESOURCE_FUNCTION_TRANSPOSE:
/* Should not be possible to get here */
break;
default:
ModelicaStandardTables_CombiTimeTable_close(tableID);
ModelicaError("Table source error\n");
return NULL;
}
if (nCols > 0) {
tableID->cols = (int*)malloc(tableID->nCols*sizeof(int));
if (NULL != tableID->cols) {
memcpy(tableID->cols, columns, tableID->nCols*sizeof(int));
}
else {
ModelicaStandardTables_CombiTimeTable_close(tableID);
ModelicaError("Memory allocation error\n");
return NULL;
}
}
if (isValidCombiTimeTable(tableID, tableName, DO_CLEANUP) == 0) {
return NULL;
}
if (tableID->nRow <= 2) {
if (tableID->smoothness == AKIMA_C1 ||
tableID->smoothness == MAKIMA_C1 ||
tableID->smoothness == FRITSCH_BUTLAND_MONOTONE_C1 ||
tableID->smoothness == STEFFEN_MONOTONE_C1) {
tableID->smoothness = LINEAR_SEGMENTS;
}
}
/* Initialization of the cubic Hermite spline coefficients */
if (tableID->smoothness == AKIMA_C1) {
tableID->spline = akimaSpline1DInit(
(const double*)tableID->table, tableID->nRow,
tableID->nCol, (const int*)tableID->cols, tableID->nCols);
}
else if (tableID->smoothness == MAKIMA_C1) {
tableID->spline = makimaSpline1DInit(
(const double*)tableID->table, tableID->nRow,
tableID->nCol, (const int*)tableID->cols, tableID->nCols);
}
else if (tableID->smoothness == FRITSCH_BUTLAND_MONOTONE_C1) {
tableID->spline = fritschButlandSpline1DInit(
(const double*)tableID->table, tableID->nRow,
tableID->nCol, (const int*)tableID->cols, tableID->nCols);
}
else if (tableID->smoothness == STEFFEN_MONOTONE_C1) {
tableID->spline = steffenSpline1DInit(
(const double*)tableID->table, tableID->nRow,
tableID->nCol, (const int*)tableID->cols, tableID->nCols);
}
if (tableID->smoothness == AKIMA_C1 ||
tableID->smoothness == MAKIMA_C1 ||
tableID->smoothness == FRITSCH_BUTLAND_MONOTONE_C1 ||
tableID->smoothness == STEFFEN_MONOTONE_C1) {
if (NULL == tableID->spline) {
ModelicaStandardTables_CombiTimeTable_close(tableID);
ModelicaError("Memory allocation error\n");
return NULL;
}
}
return (void*)tableID;
}
void ModelicaStandardTables_CombiTimeTable_close(void* _tableID) {
CombiTimeTable* tableID = (CombiTimeTable*)_tableID;
if (NULL == tableID) {
return;
}
if (NULL != tableID->table && tableID->source == TABLESOURCE_FILE) {
#if defined(TABLE_SHARE) && !defined(NO_FILE_SYSTEM)
if (NULL != tableID->key) {
TableShare* file;
MUTEX_LOCK();
HASH_FIND_STR(tableShare, tableID->key, file);
if (NULL != file) {
/* Share hit */
if (--file->refCount == 0) {
ModelicaIO_freeRealTable(file->table);
free(file->key);
HASH_DEL(tableShare, file);
free(file);
}
}
MUTEX_UNLOCK();
}
else {
/* Should not be possible to get here */
free(tableID->table);
}
#else
if (NULL != tableID->key) {
free(tableID->key);
}
free(tableID->table);
#endif
}
else if (NULL != tableID->table && (
#if !defined(NO_TABLE_COPY)
tableID->source == TABLESOURCE_MODEL ||
#endif
tableID->source == TABLESOURCE_FUNCTION_TRANSPOSE)) {
free(tableID->table);
}
if (tableID->nCols > 0 && NULL != tableID->cols) {
free(tableID->cols);
}
if (NULL != tableID->intervals) {
free(tableID->intervals);
}
spline1DClose(&tableID->spline);
free(tableID);
}
double ModelicaStandardTables_CombiTimeTable_getValue(void* _tableID, int iCol,
double t, double nextTimeEvent,
double preNextTimeEvent) {
double y = 0.;
CombiTimeTable* tableID = (CombiTimeTable*)_tableID;
if (NULL != tableID && NULL != tableID->table && NULL != tableID->cols &&
t >= tableID->startTime) {
if (nextTimeEvent < DBL_MAX && nextTimeEvent == preNextTimeEvent &&
tableID->startTime >= nextTimeEvent) {
/* Before start time event iteration: Return zero */
return y;
}
else {
const double* table = tableID->table;
const size_t nRow = tableID->nRow;
const size_t nCol = tableID->nCol;
const size_t col = (size_t)tableID->cols[iCol - 1] - 1;
if (nRow == 1) {
/* Single row */
y = TABLE_ROW0(col);
}
else {
enum PointInterval extrapolate = IN_TABLE;
const double tMin = TABLE_ROW0(0);
const double tMax = TABLE_COL0(nRow - 1);
size_t last;
/* Shift time */
const double tOld = t;
t -= tableID->shiftTime;
/* Periodic extrapolation */
if (tableID->extrapolation == PERIODIC) {
const double T = tMax - tMin;
/* Event handling for periodic extrapolation */
if (nextTimeEvent == preNextTimeEvent &&
tOld >= nextTimeEvent) {
/* Before event iteration: Return previous
interval value */
size_t i;
if (tableID->smoothness == CONSTANT_SEGMENTS) {
i = tableID->intervals[
tableID->eventInterval - 1][0];
}
else {
i = tableID->intervals[
tableID->eventInterval - 1][1];
}
y = TABLE(i, col);
return y;
}
else if (nextTimeEvent > preNextTimeEvent &&
tOld >= preNextTimeEvent &&
tableID->startTime < preNextTimeEvent) {
/* In regular (= not start time) event iteration:
Return left interval value */
size_t i = tableID->intervals[
tableID->eventInterval - 1][0];
y = TABLE(i, col);
return y;
}
else {
/* After event iteration */
const size_t i0 = tableID->intervals[
tableID->eventInterval - 1][0];
const size_t i1 = tableID->intervals[
tableID->eventInterval - 1][1];
t -= tableID->tOffset;
if (t < tMin) {
do {
t += T;
} while (t < tMin);
}
else if (t > tMax) {
do {
t -= T;
} while (t > tMax);
}
last = findRowIndex(table, nRow, nCol, tableID->last, t);
tableID->last = last;
/* Event interval correction */
if (last < i0) {
t = TABLE_COL0(i0);
}
if (last >= i1) {
if (tableID->eventInterval == 1) {
t = TABLE_COL0(i0);
}