Compiler/AWR1642: The Function Declaration Of C6x.h - TI E2E

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Compiler/AWR1642: the function declaration of c6x.h user6124565 user6124565 Prodigy 60 points Part Number: AWR1642

Tool/software: TI C/C++ Compiler

Hi , many functions are declared in the c6x.h,

such as

double _fabs (double);float _fabsf (float);long long _mpyidll (int, int);int _spint (float);int _dpint (double);

What does _spint mean？ I can't find an explanation for these functions. Can you help me?

The location of c6x.h on my computer is: C:\ti\ccs920\ccs\tools\compiler\ti-cgt-c6000_8.3.4\lib\src.

Tanks

over 5 years ago
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  • George Mock 0 George Mock over 5 years ago TI__Guru**** 251290 points

    user6124565 said:double _fabs (double);float _fabsf (float);long long _mpyidll (int, int);int _spint (float);int _dpint (double);

    Those are the names of intrinsics. An intrinsic acts like a function call, but is not implemented by calling a function. Instead, one instruction (sometimes a few instructions) is emitted. The name of the intrinsic is usually similar to the instruction. Please search the C6000 compiler manual for the sub-chapter titled Using Intrinsics to Access Assembly Language Statements. The behavior of each intrinsic is documented.

    Thanks and regards,

    -George

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