WIP Fixed __FMA__ when compiling vcl with clang
If vcl is compiled with clang for AVX2 (no FMA), it sets __FMA__
while it shouldn't.
Example of error:
In file included from ./vectorclass.h:51:
./vectorf256.h:1085:12: error: always_inline function '_mm256_fmadd_ps' requires target feature 'fma', but would be inlined into function 'mul_add' that is compiled without support for 'fma'
return _mm256_fmadd_ps(a, b, c);
Edited by Marco Cattaneo