int sym_set_row_type(sym_environment *env, int index, char rowsense, 
                     double rowrhs, double rowrng)
This routine is used to set the characteristics of a row.
| sym_environment *env | INOUT | Pointer to the SYMPHONY environment. | 
| int index | IN | Index of the row. Note that, it has to be at most the number of rows. | 
| char rowsense | IN | New sense of the row. | 
| double rowrhs | IN | New value of the right hand side of the row. | 
| double rowrng | IN | New value of the row range. | 
| FUNCTION_TERMINATED_NORMALLY | Function invoked successfully. | 
| FUNCTION_TERMINATED_ABNORMALLY | Function invoked unsuccessfully. |