I agree that it's unacceptable that SIMD Vector extensions [0] are not standardized yet. However, they already work acceptably in GCC and Clang. There are only

I agree that it's unacceptable that SIMD Vector extensions [0] are not standardized yet. However, they already work acceptably in GCC and Clang. There are only minor differences (e.g. __builtin_shufflevector) but it's usable with very minimal #ifdeffing. Example: typedef float vec4f __attribute__((vector_size(16))); // initializer vec4f a = { 1.0, 2.0, 3.0, 4.0 }; // literal expression vec4f b = a + (vec4f){ 5.0, 6.0, 7.0, 8.0 }; // standard infix operators vec4f c = -b * (a+b); // with --ffast-math, this will be a mad() It's not perfect but it's quite usable and I've been using vector extensions in C for years. [0] https://gcc.gnu.org/onlinedocs/gcc/Vector-Extensions.html https://gcc.gnu.org/onlinedocs/gcc/Vector-Extensions.html