Added the missing SSE function in vector.h. Compiles but accuracy is not...

Added the missing SSE function in vector.h. Compiles but accuracy is not identical to AVX when running test27.

src/vector.h

@@ -216,9 +216,15 @@
 #define VEC_INT __m128i
 #define vec_load(a) _mm_load_ps(a)
 #define vec_store(a, addr) _mm_store_ps(addr, a)
+#define vec_setzero() _mm_setzero_ps()
+#define vec_setintzero() _mm_setzero_si256()
 #define vec_set1(a) _mm_set1_ps(a)
+#define vec_setint1(a) _mm_set1_epi32(a)
 #define vec_set(a, b, c, d) _mm_set_ps(d, c, b, a)
 #define vec_dbl_set(a, b) _mm_set_pd(b, a)
+#define vec_add(a, b) _mm_add_ps(a, b)
+#define vec_sub(a, b) _mm_sub_ps(a, b)
+#define vec_mul(a, b) _mm_mul_ps(a, b)
 #define vec_sqrt(a) _mm_sqrt_ps(a)
 #define vec_rcp(a) _mm_rcp_ps(a)
 #define vec_rsqrt(a) _mm_rsqrt_ps(a)
@@ -227,9 +233,11 @@
 #define vec_fmax(a, b) _mm_max_ps(a, b)
 #define vec_fabs(a) _mm_andnot_ps(_mm_set1_ps(-0.f), a)
 #define vec_floor(a) _mm_floor_ps(a)
+#define vec_cmp_gt(a, b) _mm_cmpgt_ps(a, b)
 #define vec_cmp_lt(a, b) _mm_cmplt_ps(a, b)
 #define vec_cmp_lte(a, b) _mm_cmp_ps(a, b, _CMP_LE_OQ)
 #define vec_cmp_result(a) _mm_movemask_ps(a)
+#define vec_and(a, b) _mm_and_ps(a, b)
 #define vec_todbl_lo(a) _mm_cvtps_pd(a)
 #define vec_todbl_hi(a) _mm_cvtps_pd(_mm_movehl_ps(a, a))
 #define vec_dbl_tofloat(a, b) _mm_movelh_ps(_mm_cvtpd_ps(a), _mm_cvtpd_ps(b))
@@ -243,6 +251,12 @@
 #define vec_dbl_fmax(a, b) _mm_max_pd(a, b)
 #define FILL_VEC(a) \
   { .f[0] = a, .f[1] = a, .f[2] = a, .f[3] = a }
+#define VEC_HADD(a, b)            \
+  a.v = _mm_hadd_ps(a.v, a.v); \
+  b += a.f[0] + a.f[1];
+#ifndef vec_fma
+#define vec_fma(a, b, c) vec_add(vec_mul(a, b), c)
+#endif
 #else
 #define VEC_SIZE 4
 #endif