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36 /* The macros in this file are intended to be used for writing
37 * architecture-independent SIMD intrinsics code.
38 * To support a new architecture, adding macros here should be (nearly)
42 /* This file contains vector operation functions using SIMD intrinsics.
43 * gromacs/simd/macros.h should be included before including this file.
46 #ifndef GMX_SIMD_VECTOR_OPERATIONS_H
47 #define GMX_SIMD_VECTOR_OPERATIONS_H
49 #ifndef GMX_SIMD_MACROS_H
50 #error "gromacs/simd/macros.h was not included before including gromacs/simd/vector_operations.h"
55 static gmx_inline gmx_mm_pr
56 gmx_calc_rsq_pr(gmx_mm_pr x, gmx_mm_pr y, gmx_mm_pr z)
58 return gmx_madd_pr(z, z, gmx_madd_pr(y, y, gmx_mul_pr(x, x)));
61 /* inner-product of multiple vectors */
62 static gmx_inline gmx_mm_pr
63 gmx_iprod_pr(gmx_mm_pr ax, gmx_mm_pr ay, gmx_mm_pr az,
64 gmx_mm_pr bx, gmx_mm_pr by, gmx_mm_pr bz)
68 ret = gmx_mul_pr(ax, bx);
69 ret = gmx_madd_pr(ay, by, ret);
70 ret = gmx_madd_pr(az, bz, ret);
75 /* norm squared of multiple vectors */
76 static gmx_inline gmx_mm_pr
77 gmx_norm2_pr(gmx_mm_pr ax, gmx_mm_pr ay, gmx_mm_pr az)
81 ret = gmx_mul_pr(ax, ax);
82 ret = gmx_madd_pr(ay, ay, ret);
83 ret = gmx_madd_pr(az, az, ret);
88 /* cross-product of multiple vectors */
89 static gmx_inline void
90 gmx_cprod_pr(gmx_mm_pr ax, gmx_mm_pr ay, gmx_mm_pr az,
91 gmx_mm_pr bx, gmx_mm_pr by, gmx_mm_pr bz,
92 gmx_mm_pr *cx, gmx_mm_pr *cy, gmx_mm_pr *cz)
94 *cx = gmx_mul_pr(ay, bz);
95 *cx = gmx_nmsub_pr(az, by, *cx);
97 *cy = gmx_mul_pr(az, bx);
98 *cy = gmx_nmsub_pr(ax, bz, *cy);
100 *cz = gmx_mul_pr(ax, by);
101 *cz = gmx_nmsub_pr(ay, bx, *cz);
104 /* a + b + c + d (not really a vector operation, but where else put this?) */
105 static gmx_inline gmx_mm_pr
106 gmx_sum4_pr(gmx_mm_pr a, gmx_mm_pr b, gmx_mm_pr c, gmx_mm_pr d)
108 return gmx_add_pr(gmx_add_pr(a, b), gmx_add_pr(c, d));