Viewing file:  vqshrun_n.c (3.8 KB) -rw-r--r--
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#include <arm_neon.h>
#include "arm-neon-ref.h"
#include "compute-ref-data.h"
/* Expected results with negative input. */
VECT_VAR_DECL(expected_neg,uint,8,8) [] = { 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0 };
VECT_VAR_DECL(expected_neg,uint,16,4) [] = { 0x0, 0x0, 0x0, 0x0 };
VECT_VAR_DECL(expected_neg,uint,32,2) [] = { 0x0, 0x0 };
/* Expected results with max input value shifted by 1. */
VECT_VAR_DECL(expected_max_sh1,uint,8,8) [] = { 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff };
VECT_VAR_DECL(expected_max_sh1,uint,16,4) [] = { 0xffff, 0xffff,
0xffff, 0xffff };
VECT_VAR_DECL(expected_max_sh1,uint,32,2) [] = { 0xffffffff, 0xffffffff };
VECT_VAR_DECL(expected_max_sh1,uint,64,1) [] = { 0x3333333333333333 };
/* Expected results. */
VECT_VAR_DECL(expected,uint,8,8) [] = { 0x48, 0x48, 0x48, 0x48,
0x48, 0x48, 0x48, 0x48 };
VECT_VAR_DECL(expected,uint,16,4) [] = { 0x0, 0x0, 0x0, 0x0 };
VECT_VAR_DECL(expected,uint,32,2) [] = { 0xdeadbe, 0xdeadbe };
#define INSN vqshrun_n
#define TEST_MSG "VQSHRUN_N"
#define FNNAME1(NAME) void exec_ ## NAME (void)
#define FNNAME(NAME) FNNAME1(NAME)
FNNAME (INSN)
{
/* Basic test: y=vqshrun_n(x,v), then store the result. */
#define TEST_VQSHRUN_N2(INSN, T1, T2, W, W2, N, V, CMT) \
Set_Neon_Cumulative_Sat(0, VECT_VAR(vector_res, uint, W2, N)); \
VECT_VAR(vector_res, uint, W2, N) = \
INSN##_##T2##W(VECT_VAR(vector, T1, W, N), \
V); \
vst1_u##W2(VECT_VAR(result, uint, W2, N), \
VECT_VAR(vector_res, uint, W2, N));
/* Two auxliary macros are necessary to expand INSN */
#define TEST_VQSHRUN_N1(INSN, T1, T2, W, W2, N, V, CMT) \
TEST_VQSHRUN_N2(INSN, T1, T2, W, W2, N, V, CMT)
#define TEST_VQSHRUN_N(T1, T2, W, W2, N, V, CMT) \
TEST_VQSHRUN_N1(INSN, T1, T2, W, W2, N, V, CMT)
/* vector is twice as large as vector_res. */
DECL_VARIABLE(vector, int, 16, 8);
DECL_VARIABLE(vector, int, 32, 4);
DECL_VARIABLE(vector, int, 64, 2);
DECL_VARIABLE(vector_res, uint, 8, 8);
DECL_VARIABLE(vector_res, uint, 16, 4);
DECL_VARIABLE(vector_res, uint, 32, 2);
clean_results ();
/* Fill input vector with negative values, to check saturation on
limits. */
VDUP(vector, q, int, s, 16, 8, -2);
VDUP(vector, q, int, s, 32, 4, -3);
VDUP(vector, q, int, s, 64, 2, -4);
/* Choose shift amount arbitrarily. */
#define CMT " (negative input)"
TEST_VQSHRUN_N(int, s, 16, 8, 8, 3, CMT);
TEST_VQSHRUN_N(int, s, 32, 16, 4, 4, CMT);
TEST_VQSHRUN_N(int, s, 64, 32, 2, 2, CMT);
CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected_neg, CMT);
CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected_neg, CMT);
CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected_neg, CMT);
/* Fill input vector with max value, to check saturation on
limits. */
VDUP(vector, q, int, s, 16, 8, 0x7FFF);
VDUP(vector, q, int, s, 32, 4, 0x7FFFFFFF);
VDUP(vector, q, int, s, 64, 2, 0x7FFFFFFFFFFFFFFFLL);
#undef CMT
#define CMT " (check cumulative saturation)"
TEST_VQSHRUN_N(int, s, 16, 8, 8, 1, CMT);
TEST_VQSHRUN_N(int, s, 32, 16, 4, 1, CMT);
TEST_VQSHRUN_N(int, s, 64, 32, 2, 1, CMT);
CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected_max_sh1, CMT);
CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected_max_sh1, CMT);
CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected_max_sh1, CMT);
/* Fill input vector with positive values, to check normal case. */
VDUP(vector, q, int, s, 16, 8, 0x1234);
VDUP(vector, q, int, s, 32, 4, 0x87654321);
VDUP(vector, q, int, s, 64, 2, 0xDEADBEEF);
#undef CMT
#define CMT ""
TEST_VQSHRUN_N(int, s, 16, 8, 8, 6, CMT);
TEST_VQSHRUN_N(int, s, 32, 16, 4, 7, CMT);
TEST_VQSHRUN_N(int, s, 64, 32, 2, 8, CMT);
CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected, CMT);
CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected, CMT);
CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected, CMT);
}
int main (void)
{
exec_vqshrun_n ();
return 0;
}
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