ARM Compiler toolchain v4.1 for µVision Using the Compiler

Compiler Features
4.8 Compiler intrinsics for Digital Signal Processing (DSP)
The compiler provides intrinsics that assist in the implementation of DSP algorithms. These
intrinsics introduce the appropriate target instructions for:
• ARM architectures from ARM v5TE and later
• Thumb-2 architectures.
Not every instruction has its own intrinsic. The compiler can combine several intrinsics, or
combinations of intrinsics and C operators to generate more powerful instructions. For example,
the ARM v5TE QDADD instruction is generated by a combination of __qadd and __qdbl.
4.8.1 See also
Reference
Compiler Reference:
• __clz intrinsic on page 5-63
• __fabs intrinsic on page 5-67
• __fabsf intrinsic on page 5-68
• __qadd intrinsic on page 5-75
• __qdbl intrinsic on page 5-75
• __qsub intrinsic on page 5-76
• __sqrt intrinsic on page 5-80
• __sqrtf intrinsic on page 5-81
• __ssat intrinsic on page 5-81
• __usat intrinsic on page 5-85
• ARMv6 SIMD intrinsics on page 5-88.
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