This intrinsic inserts a VFP VSQRT instruction
into the instruction stream generated by the compiler. It enables
you to obtain the square root of a double-precision floating-point
value from within your C or C++ code.
Note
The __sqrt intrinsic is an analogue of
the standard C library function sqrt. It differs
from the standard library function in that a call to __sqrt is
guaranteed to be compiled into a single, inline, machine instruction
on an ARM architecture-based processor equipped with a VFP coprocessor.
SyntaxThe compiler does not recognize the __sqrt intrinsic
when compiling for a target that is not equipped with a VFP coprocessor.
The compiler generates either a warning or an error in this case.
VABS, VNEG, and VSQRT in the Assembler Reference.
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