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/* SPDX-License-Identifier: Apache-2.0
* Copyright(c) 2021 Cisco Systems, Inc.
*/
#ifndef included_vector_array_mask_h
#define included_vector_array_mask_h
#include <vppinfra/clib.h>
/** \brief Mask array of 32-bit elemments
@param src source array of u32 elements
@param mask use to mask the values of source array
@param n_elts number of elements in the source array
@return masked values are return in source array
*/
static_always_inline void
clib_array_mask_u32 (u32 *src, u32 mask, u32 n_elts)
{
u32 i;
#if defined(CLIB_HAVE_VEC512)
u32x16 mask16 = u32x16_splat (mask);
for (i = 0; i + 16 <= n_elts; i += 16)
*((u32x16u *) (src + i)) &= mask16;
n_elts -= i;
if (n_elts)
{
u16 m = pow2_mask (n_elts);
u32x16_mask_store (u32x16_mask_load_zero (src + i, m) & mask16, src + i,
m);
}
return;
#elif defined(CLIB_HAVE_VEC256)
u32x8 mask8 = u32x8_splat (mask);
for (i = 0; i + 8 <= n_elts; i += 8)
*((u32x8u *) (src + i)) &= mask8;
n_elts -= i;
src += i;
#if defined(CLIB_HAVE_VEC256_MASK_LOAD_STORE)
if (n_elts)
{
u8 m = pow2_mask (n_elts);
u32x8_mask_store (u32x8_mask_load_zero (src, m) & mask8, src, m);
}
return;
#endif
#elif defined(CLIB_HAVE_VEC128)
u32x4 mask4 = u32x4_splat (mask);
for (i = 0; i + 4 <= n_elts; i += 4)
*((u32x4u *) (src + i)) &= mask4;
n_elts -= i;
src += i;
switch (n_elts)
{
case 3:
src[2] &= mask;
case 2:
src[1] &= mask;
case 1:
src[0] &= mask;
case 0:
default:;
}
return;
#endif
while (n_elts > 0)
{
src[0] &= mask;
src++;
n_elts--;
}
}
#endif
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