我希望使用此功能，其文档可以找到here。但是，我的MATLAB中似乎没有这样的功能。
>> help gfprimfd
gfprimfd not found.
Use the Help browser search field to search the documentation, or
type "help help" for help command options, such as help for methods.
然后，我注意到文档实际写了“R2014a”。
这是否意味着我的R2012b版本中不包含该功能？除了安装R2014a版本外，我该怎么做才能使用这个功能？
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MATLAB Version: 8.0.0.783 (R2012b)
MATLAB License Number: 724504
Operating System: Mac OS X Version: 10.9.2 Build: 13C64
Java Version: Java 1.6.0_65-b14-462-11M4609 with Apple Inc. Java HotSpot(TM) 64-Bit Server VM mixed mode
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MATLAB Version 8.0 (R2012b)
Simulink Version 8.0 (R2012b)
Bioinformatics Toolbox Version 4.2 (R2012b)
Computer Vision System Toolbox Version 5.1 (R2012b)
Curve Fitting Toolbox Version 3.3 (R2012b)
DSP System Toolbox Version 8.3 (R2012b)
Fuzzy Logic Toolbox Version 2.2.16 (R2012b)
Global Optimization Toolbox Version 3.2.2 (R2012b)
Image Processing Toolbox Version 8.1 (R2012b)
MATLAB Compiler Version 4.18 (R2012b)
MATLAB Report Generator Version 3.13 (R2012b)
Mapping Toolbox Version 3.6 (R2012b)
Neural Network Toolbox Version 8.0 (R2012b)
Optimization Toolbox Version 6.2.1 (R2012b)
Parallel Computing Toolbox Version 6.1 (R2012b)
Signal Processing Toolbox Version 6.18 (R2012b)
Statistics Toolbox Version 8.1 (R2012b)
System Identification Toolbox Version 8.1 (R2012b)
Wavelet Toolbox Version 4.10 (R2012b)