Added extra AVX-512 intrinsics for blending.

src/vector.h

@@ -82,12 +82,13 @@
 #define vec_cmp_result(a) a
 #define vec_form_int_mask(a) a
 #define vec_and(a, b) _mm512_and_ps(a, b)
-#define vec_mask_and(a, b) a & b
-#define vec_and_mask(a, mask) _mm512_maskz_expand_ps(mask, a)
+#define vec_mask_and(a, b) _mm512_kand(a, b)
+#define vec_and_mask(a, mask) _mm512_maskz_expand_ps(mask, a) /* TODO: Alternative needs to be found. */
 #define vec_init_mask(mask) mask = 0xFFFF
 #define vec_zero_mask(mask) mask = 0
 #define vec_create_mask(mask, cond) mask = cond
 #define vec_pad_mask(mask, pad) mask = mask >> (pad)
+#define vec_blend(mask, a, b) _mm512_mask_blend_ps(mask, a, b)
 #define vec_todbl_lo(a) _mm512_cvtps_pd(_mm512_extract128_ps(a, 0))
 #define vec_todbl_hi(a) _mm512_cvtps_pd(_mm512_extract128_ps(a, 1))
 #define vec_dbl_tofloat(a, b) _mm512_insertf128(_mm512_castps128_ps512(a), b, 1)