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 # File syscLegacyInterfaces.h

 Last update: 17.07.2025 

![](https://img.shields.io/badge/language-C-blue "C")

**Location**: `syscLegacyInterfaces.h`

## Includes

- SystemCouplingParticipant/LibraryType.hpp
- SystemCouplingParticipant/syscCommonTypes.h
- SystemCouplingParticipant/syscInputScalarData.h
- SystemCouplingParticipant/syscInputVectorData.h
- SystemCouplingParticipant/syscOutputIntegerData.h
- SystemCouplingParticipant/syscOutputScalarData.h
- SystemCouplingParticipant/syscOutputVectorData.h
- SystemCouplingParticipant/syscRegion.h
- <stddef.h>

```mermaid
graph LR
5["SystemCouplingParticipant/syscInputVectorData.h"]

3["SystemCouplingParticipant/syscCommonTypes.h"]

10["stddef.h"]

2["SystemCouplingParticipant/LibraryType.hpp"]

9["SystemCouplingParticipant/syscRegion.h"]

8["SystemCouplingParticipant/syscOutputVectorData.h"]

4["SystemCouplingParticipant/syscInputScalarData.h"]

6["SystemCouplingParticipant/syscOutputIntegerData.h"]

1["syscLegacyInterfaces.h"]
click 1 "syscLegacyInterfaces_8h.md#syscLegacyInterfaces_8h"
1 --> 2
1 --> 3
1 --> 4
1 --> 5
1 --> 6
1 --> 7
1 --> 8
1 --> 9
1 --> 10

7["SystemCouplingParticipant/syscOutputScalarData.h"]


```

## Typedefs

<a id="syscLegacyInterfaces_8h_1a4c9447d8bf1f2ff342d3106ca6354fc8"></a>

### Typedef SyscInputScalarVariableAccess

![](https://img.shields.io/badge/-public-brightgreen "public")

**Definition**: `syscLegacyInterfaces.h` (line 30)

```
typedef SyscError(* SyscInputScalarVariableAccess) (const char *regionName, const char *variableName, SyscInputScalarData *varData)

```

**Return type**: [SyscError](structSyscError.md#structSyscError)(\*

<a id="syscLegacyInterfaces_8h_1af9a8c22052da26bc0a1f59cae3b10c49"></a>

### Typedef SyscInputVectorVariableAccess

![](https://img.shields.io/badge/-public-brightgreen "public")

**Definition**: `syscLegacyInterfaces.h` (line 40)

```
typedef SyscError(* SyscInputVectorVariableAccess) (const char *regionName, const char *variableName, SyscInputVectorData *varData)

```

**Return type**: [SyscError](structSyscError.md#structSyscError)(\*

<a id="syscLegacyInterfaces_8h_1a5a048dafdcd30450abd59ba8efce06a4"></a>

### Typedef SyscOutputScalarVariableAccess

![](https://img.shields.io/badge/-public-brightgreen "public")

**Definition**: `syscLegacyInterfaces.h` (line 51)

```
typedef SyscError(* SyscOutputScalarVariableAccess) (const char *regionName, const char *variableName, SyscOutputScalarData *varData)

```

**Return type**: [SyscError](structSyscError.md#structSyscError)(\*

<a id="syscLegacyInterfaces_8h_1a28c4453b0889a06dc227190145fa1324"></a>

### Typedef SyscOutputVectorVariableAccess

![](https://img.shields.io/badge/-public-brightgreen "public")

**Definition**: `syscLegacyInterfaces.h` (line 62)

```
typedef SyscError(* SyscOutputVectorVariableAccess) (const char *regionName, const char *variableName, SyscOutputVectorData *varData)

```

**Return type**: [SyscError](structSyscError.md#structSyscError)(\*

## Functions

<a id="syscLegacyInterfaces_8h_1a783cf517609f48fb1a26c57bf9f7ee8b"></a>

### Function syscCompleteCouplingSetup

![](https://img.shields.io/badge/-public-brightgreen "public")

```
SyscError syscCompleteCouplingSetup()

```

**Return type**: [SyscError](structSyscError.md#structSyscError)

<a id="syscLegacyInterfaces_8h_1a363a9d7573b36139a2fdda8814d1211d"></a>

### Function syscCompleteCouplingSetupTransient

![](https://img.shields.io/badge/-public-brightgreen "public")

```
SyscError syscCompleteCouplingSetupTransient()

```

**Return type**: [SyscError](structSyscError.md#structSyscError)

<a id="syscLegacyInterfaces_8h_1a92307cea739c9c0c140d0855b2824b18"></a>

### Function syscRegisterInputScalarVariableAccess

![](https://img.shields.io/badge/-public-brightgreen "public")

```
SyscError syscRegisterInputScalarVariableAccess(SyscInputScalarVariableAccess dataAccess)

```

**Parameters**:

- SyscInputScalarVariableAccess **dataAccess**

**Return type**: [SyscError](structSyscError.md#structSyscError)

<a id="syscLegacyInterfaces_8h_1a27db89b4e6b29d28a5a6ccf28bdf747a"></a>

### Function syscRegisterInputVectorVariableAccess

![](https://img.shields.io/badge/-public-brightgreen "public")

```
SyscError syscRegisterInputVectorVariableAccess(SyscInputVectorVariableAccess dataAccess)

```

**Parameters**:

- SyscInputVectorVariableAccess **dataAccess**

**Return type**: [SyscError](structSyscError.md#structSyscError)

<a id="syscLegacyInterfaces_8h_1a8253ec6d984411829f920f966776bab9"></a>

### Function syscRegisterOutputScalarVariableAccess

![](https://img.shields.io/badge/-public-brightgreen "public")

```
SyscError syscRegisterOutputScalarVariableAccess(SyscOutputScalarVariableAccess dataAccess)

```

**Parameters**:

- SyscOutputScalarVariableAccess **dataAccess**

**Return type**: [SyscError](structSyscError.md#structSyscError)

<a id="syscLegacyInterfaces_8h_1a8768de1fab6089b7eaf134818027ded6"></a>

### Function syscRegisterOutputVectorVariableAccess

![](https://img.shields.io/badge/-public-brightgreen "public")

```
SyscError syscRegisterOutputVectorVariableAccess(SyscOutputVectorVariableAccess dataAccess)

```

**Parameters**:

- SyscOutputVectorVariableAccess **dataAccess**

**Return type**: [SyscError](structSyscError.md#structSyscError)

<a id="syscLegacyInterfaces_8h_1a21768f0d4d4a65c2aa37727bd4789ccf"></a>

### Function syscGetVolumeMesh

![](https://img.shields.io/badge/-public-brightgreen "public")

```
SyscVolumeMesh syscGetVolumeMesh()

```

**Return type**: [SyscVolumeMesh](structSyscVolumeMesh.md#structSyscVolumeMesh)

## Source

```
/*
* Copyright ANSYS, Inc. Unauthorized use, distribution, or duplication is prohibited.
*/

#pragma once

#include "SystemCouplingParticipant/LibraryType.hpp"

#include "SystemCouplingParticipant/syscCommonTypes.h"
#include "SystemCouplingParticipant/syscInputScalarData.h"
#include "SystemCouplingParticipant/syscInputVectorData.h"
#include "SystemCouplingParticipant/syscOutputIntegerData.h"
#include "SystemCouplingParticipant/syscOutputScalarData.h"
#include "SystemCouplingParticipant/syscOutputVectorData.h"
#include "SystemCouplingParticipant/syscRegion.h"

#include <stddef.h>

#ifdef __cplusplus
extern "C" {
#endif

/* Deprecated - use syscCompleteSetup() */
 SyscError syscCompleteCouplingSetup();

/* Deprecated - use syscCompleteSetup() */
 SyscError syscCompleteCouplingSetupTransient();

/* Deprecated - use SyscInputScalarDataAccess. */
typedef SyscError (*SyscInputScalarVariableAccess)(
  const char* regionName,
  const char* variableName,
  SyscInputScalarData* varData);

/* Deprecated - use syscRegisterIniputScalarDataAccess() */
 SyscError syscRegisterInputScalarVariableAccess(
  SyscInputScalarVariableAccess dataAccess);

/* Deprecated - use SyscInputVectorDataAccess. */
typedef SyscError (*SyscInputVectorVariableAccess)(
  const char* regionName,
  const char* variableName,
  SyscInputVectorData* varData);

/* Deprecated - use syscRegisterInputVectorDataAccess() */

SyscError syscRegisterInputVectorVariableAccess(
  SyscInputVectorVariableAccess dataAccess);

/* Deprecated - use SyscOutputScalarDataAccess. */
typedef SyscError (*SyscOutputScalarVariableAccess)(
  const char* regionName,
  const char* variableName,
  SyscOutputScalarData* varData);

/* Deprecated - use syscRegisterOutputScalarDataAccess() */

SyscError syscRegisterOutputScalarVariableAccess(
  SyscOutputScalarVariableAccess dataAccess);

/* Deprecated - use SyscOutputVectorDataAccess. */
typedef SyscError (*SyscOutputVectorVariableAccess)(
  const char* regionName,
  const char* variableName,
  SyscOutputVectorData* varData);

/* Deprecated - use syscRegisterOutputVectorDataAccess() */

SyscError syscRegisterOutputVectorVariableAccess(
  SyscOutputVectorVariableAccess dataAccess);

/* Deprecated - use syscGetVolumeMeshEmpty() */

SyscVolumeMesh syscGetVolumeMesh();

#ifdef __cplusplus
}
#endif

```