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Compiler/TMS320F28377S: Unresolved Symbol Error using CLA Compiler Intrinsics

Andrew Barnett
Intellectual 870 points
Part Number: TMS320F28377S

Tool/software: TI C/C++ Compiler

I am trying to use the intrinsic:

short __mgtu( unsigned int x, unsigned int y);

and others similar to it, defined in Table 10-1 of SPRU514T.

The specific code is:

Test_x1 = __mgtu(Test_x2, Test_x3);

variables are defined as follows:

short Test_x1;
short Test_x2;
short Test_x3;

I get the compiler error "unresolved symbol, __MGTU, first referenced in ..."

I can use the __mmaxf32, __mminf32 intrinsics with no problem.  

Why am I getting this error?

Thanks in advance for any insight.