Available on (x86 or x86-64) and target feature
fma
and x86 only.Expand description
Multiplies the lower double-precision (64-bit) floating-point elements in
a
and b
, and add the negated intermediate result to the lower element
in c
. Store the result in the lower element of the returned value, and
copy the upper element from a
to the upper elements of the result.