Register fixed-point data type with [Slope Bias] scaling specified in terms of fractional slope, fixed exponent, and bias, and return its data type ID
extern DTypeId ssRegisterDataTypeFxpFSlopeFixExpBias (SimStruct *S, int isSigned, int wordLength, double fractionalSlope, int fixedExponent, double bias, int obeyDataTypeOverride)
SimStruct representing an S-function block.
TRUE if the data type is signed.
FALSE if the data type is unsigned.
Total number of bits in the data type, including any sign bit.
Fractional slope of the data type.
Exponent of the slope of the data type.
Bias of the scaling of the data type.
TRUE indicates that the Data Type
Override setting for the subsystem is to be obeyed. Depending
on the value of Data Type Override, the resulting
data type could be
double, or the fixed-point data type specified by the other
arguments of the function.
FALSE indicates that the Data Type
Override setting is to be ignored.
This function fully registers a fixed-point data type with the Simulink® software
and returns a data type ID. Note that unlike the standard Simulink function
ssRegisterDataType, you do not need
to take any additional registration steps. The data type ID can be
used to specify the data types of input and output ports, run-time
parameters, and DWork states. It can also be used with all the standard
data type access methods in
simstruc.h, such as
Use this function if you want to register a fixed-point data type by specifying the word length, fractional slope, fixed exponent, and bias. Alternatively, you can use one of the other fixed-point registration functions:
register a data type with binary-point-only scaling.
register a scaled double.
register a data type with [Slope Bias] scaling.
If the registered data type is not one of the Simulink built-in data types, a Fixed-Point Designer™ software license is checked out. To prevent a Fixed-Point Designer software license from being checked out when you simply open or view a model, protect registration calls with
if (ssGetSimMode(S) != SS_SIMMODE_SIZES_CALL_ONLY ) ssRegisterDataType...
Note Because of the nature of the assignment of data type IDs, you should always use API functions to extract information from a data type ID about a data type in your S-function. For more information, refer to Data Type IDs.
To use this function, you must include
For more information, see Structure of the S-Function.
None. Data types should be registered in the Simulink software. Registration of data types is not supported in TLC.