Return fractional slope of registered data type
extern double ssGetDataTypeFracSlope(SimStruct *S, DTypeId
dataTypeId)
SSimStruct representing an S-function block.
dataTypeIdData type ID of the registered data type for which you want to know the fractional slope.
Fixed-point numbers can be represented as
real-world value = (slope × integer) + bias,
where the slope can be expressed as
slope = fractional slope × 2exponent.
This function returns the fractional slope of a registered fixed-point data
type. To get the total slope, use ssGetDataTypeTotalSlope:
For power-of-two scaling, the fractional slope is
1.
If the data type has trivial scaling, including data types
single and double, the
fractional slope is 1.
If the registered data type is ScaledDouble, the
fractional slope returned is that of the nonoverridden data type.
This function errors out when ssGetDataTypeIsFxpFltApiCompat returns
FALSE.
To use this function, you must include fixedpoint.h and
fixedpoint.c. For more information, see Structure of the S-Function.
C
FixPt_DataTypeFracSlope