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#include "cctk.h"
#include "cctk_Arguments.h"
#include "cctk_Parameters.h"
#include "vectors.h"
#include <math.h>
#include <stdio.h>
inline int my_signbit (CCTK_REAL const x)
{
using namespace std;
return signbit(x);
}
#define SCALARTEST(testname, vecexpr, scalarexpr) \
do { \
if (verbose) \
CCTK_VInfo (CCTK_THORNSTRING, "Test %s...", testname); \
CCTK_REAL res = (scalarexpr); \
CCTK_REAL vecres = (vecexpr); \
if(vecres == res) \
passed++; \
else \
CCTK_VParamWarn(CCTK_THORNSTRING, \
"Failed test %s: expected %.17g, received %.17g", \
testname, (double)res, (double)vecres); \
numtests++; \
} while(0)
#define VECTEST(testname, vecexpr, scalarexpr) \
do { \
if (verbose) \
CCTK_VInfo (CCTK_THORNSTRING, "Test %s...", testname); \
CCTK_REAL_VEC rv = (vecexpr); \
for(int i=0; i<CCTK_REAL_VEC_SIZE; i++) { \
CCTK_REAL res = (scalarexpr); \
CCTK_REAL vecres = vec_elt(rv,i); \
if(vecres == res) \
passed++; \
else \
CCTK_VParamWarn(CCTK_THORNSTRING, \
"Failed test %s: " \
"for element %d, expected %.17g, received %.17g", \
testname, i, (double)res, (double)vecres); \
numtests++; \
} \
} while(0)
extern "C"
void Vectors_Test(CCTK_ARGUMENTS)
{
DECLARE_CCTK_ARGUMENTS;
DECLARE_CCTK_PARAMETERS;
CCTK_INFO ("Testing vectorisation... [errors may result in segfaults]");
fflush (stdout);
char testname[100];
int passed = 0, numtests = 0;
CCTK_REAL a[CCTK_REAL_VEC_SIZE];
CCTK_REAL b[CCTK_REAL_VEC_SIZE];
CCTK_REAL c[CCTK_REAL_VEC_SIZE];
for(int i=0; i<CCTK_REAL_VEC_SIZE; i++) {
a[i] = (i+1)*1.23456789;
b[i] = -(i+1)*9.87654321;
c[i] = (i+1)*1.01010101;
}
CCTK_REAL_VEC av = vec_loadu(a[0]);
CCTK_REAL_VEC bv = vec_loadu(b[0]);
CCTK_REAL_VEC cv = vec_loadu(c[0]);
/* l and lv are similar to a and av, except that it is larger, and
guaranteed to be aligned */
CCTK_REAL_VEC lv[4];
lv[0] = vec_loadu(a[0]);
lv[1] = vec_loadu(b[0]);
lv[2] = vec_loadu(c[0]);
lv[3] = vec_loadu(a[0]);
CCTK_REAL *const l = (CCTK_REAL*)&lv[0];
/* s and sv are similar to a and av, but are aligned and not
initialised */
CCTK_REAL_VEC sv;
CCTK_REAL *const s = (CCTK_REAL*)&sv;
VECTEST("vec_set1", vec_set1(a[0]), a[0]);
#if CCTK_REAL_VEC_SIZE == 1
VECTEST("vec_set", vec_set(a[0]), a[i]);
#elif CCTK_REAL_VEC_SIZE == 2
VECTEST("vec_set", vec_set(a[0],a[1]), a[i]);
#elif CCTK_REAL_VEC_SIZE == 4
VECTEST("vec_set", vec_set(a[0],a[1],a[2],a[3]), a[i]);
#else
# error "Unsupported vector size"
#endif
SCALARTEST("vec_elt0", vec_elt0(av), a[0]);
for (int d=0; d<CCTK_REAL_VEC_SIZE; ++d) {
snprintf (testname, sizeof testname, "vec_elt[%d]", d);
SCALARTEST(testname, vec_elt(av,d), a[d]);
}
/* These tests will probably fail with a segfault, if they fail */
VECTEST("vec_load", vec_load(*l), l[i]);
for (int d=0; d<CCTK_REAL_VEC_SIZE; ++d) {
snprintf (testname, sizeof testname, "vec_loadu[%d]", d);
VECTEST(testname, vec_loadu(l[d]), l[i+d]);
}
for (int d=0; d<CCTK_REAL_VEC_SIZE; ++d) {
snprintf (testname, sizeof testname, "vec_loadu_maybe[%d]", d);
VECTEST(testname, vec_loadu_maybe(d,l[d]), l[i+d]);
}
for (int d1=0; d1<CCTK_REAL_VEC_SIZE; ++d1) {
for (int d2=0; d2<CCTK_REAL_VEC_SIZE; ++d2) {
for (int d3=0; d3<CCTK_REAL_VEC_SIZE; ++d3) {
if (! (VECTORISE && VECTORISE_ALIGNED_ARRAYS) || (d2==0 && d3==0)) {
snprintf (testname, sizeof testname,
"vec_loadu_maybe3[%d,%d,%d]", d1,d2,d3);
VECTEST(testname,
vec_loadu_maybe3(d1,d2,d3,l[d1+d2+d3]), l[i+d1+d2+d3]);
}
}
}
}
/* These tests may fail with a segfault, if they fail */
sv = av; vec_store(*s, bv);
VECTEST("vec_store", sv, b[i]);
sv = av; vec_store_nta(*s, bv);
VECTEST("vec_store_nta", sv, b[i]);
int const arenaitems = 3;
int const arenasize = arenaitems * CCTK_REAL_VEC_SIZE;
for (int ilo=0; ilo<arenasize; ++ilo) {
for (int ihi=0; ihi<arenasize; ++ihi) {
// Initialise arena to a everywhere
for (int n=0; n<arenaitems; ++n) {
lv[n] = av;
}
// Set arena to b in the "interior"
for (int i=(ilo & -CCTK_REAL_VEC_SIZE); i<ihi; i+=CCTK_REAL_VEC_SIZE) {
vec_store_partial_prepare(i, ilo, ihi);
vec_store_nta_partial(l[i], bv);
}
for (int i=0; i<arenasize; ++i) {
snprintf (testname, sizeof testname,
"vec_store_nta_partial[%d,%d;%d]", ilo, ihi, i);
SCALARTEST(testname, l[i],
(i>=ilo and i<ihi ? b : a)[i & (CCTK_REAL_VEC_SIZE-1)]);
}
}
}
/* The partial stores are not implemented for d==0 and
d==CCTK_REAL_VEC_SIZE-1 (because these are trivial) */
for (int d=1; d<CCTK_REAL_VEC_SIZE-1; ++d) {
sv = av; vec_store_nta_partial_lo(*s, bv, d);
snprintf (testname, sizeof testname, "vec_store_nta_partial_lo[%d]", d);
VECTEST(testname, sv, i<d ? b[i] : a[i]);
}
for (int d=1; d<CCTK_REAL_VEC_SIZE-1; ++d) {
sv = av; vec_store_nta_partial_hi(*s, bv, d);
snprintf (testname, sizeof testname, "vec_store_nta_partial_hi[%d]", d);
VECTEST(testname, sv, i>=CCTK_REAL_VEC_SIZE-d ? b[i] : a[i]);
}
for (int dlo=1; dlo<CCTK_REAL_VEC_SIZE-1; ++dlo) {
for (int dhi=1; dhi<CCTK_REAL_VEC_SIZE-1; ++dhi) {
sv = av; vec_store_nta_partial_mid(*s, bv, dlo, dhi);
snprintf (testname, sizeof testname,
"vec_store_nta_partial_mid[%d,%d]", dlo, dhi);
VECTEST(testname, sv, i<dlo && i>=CCTK_REAL_VEC_SIZE-dhi ? b[i] : a[i]);
}
}
VECTEST("kneg", kneg(av), -a[i] );
VECTEST("kadd", kadd(av, bv), a[i] + b[i] );
VECTEST("ksub", ksub(av, bv), a[i] - b[i] );
VECTEST("kmul", kmul(av, bv), a[i] * b[i] );
VECTEST("kdiv", kdiv(av, bv), a[i] / b[i] );
VECTEST("kmadd", kmadd(av, bv, cv), a[i] * b[i] + c[i] );
VECTEST("kmsub", kmsub(av, bv, cv), a[i] * b[i] - c[i] );
VECTEST("knmadd", knmadd(av, bv, cv), -a[i] * b[i] - c[i] );
VECTEST("knmsub", knmsub(av, bv, cv), -a[i] * b[i] + c[i] );
VECTEST("kcos", kcos(av), cos(a[i]) );
VECTEST("kexp", kexp(av), exp(a[i]) );
VECTEST("kfabs", kfabs(av), fabs(a[i]) );
VECTEST("kfmax", kfmax(av, bv), fmax(a[i], b[i]) );
VECTEST("kfmin", kfmin(av, bv), fmin(a[i], b[i]) );
VECTEST("kfnabs", kfnabs(av), -fabs(a[i]) );
VECTEST("klog", klog(av), log(a[i]) );
VECTEST("kpow", kpow(av, 3.14159), pow(a[i], 3.14159) );
VECTEST("ksin", ksin(av), sin(a[i]) );
VECTEST("ksqrt", ksqrt(av), sqrt(a[i]) );
VECTEST("ktan", ktan(av), tan(a[i]) );
VECTEST("kifpos positive",
kifpos(av, bv, cv), my_signbit(a[i]) ? c[i] : b[i]);
VECTEST("kifpos negative",
kifpos(bv, bv, cv), my_signbit(b[i]) ? c[i] : b[i]);
VECTEST("kifpos 0", kifpos(vec_set1(0.),bv,cv), b[i]);
VECTEST("kifpos -0", kifpos(vec_set1(-0.),bv,cv), c[i]);
VECTEST("kifneg positive",
kifneg(av, bv, cv), my_signbit(a[i]) ? b[i] : c[i]);
VECTEST("kifneg negative",
kifneg(bv, bv, cv), my_signbit(b[i]) ? b[i] : c[i]);
VECTEST("kifneg 0", kifneg(vec_set1(0.),bv,cv), c[i]);
VECTEST("kifneg -0", kifneg(vec_set1(-0.),bv,cv), b[i]);
if (passed != numtests)
CCTK_VWarn(CCTK_WARN_ALERT, __LINE__, __FILE__, CCTK_THORNSTRING,
"Failed %d correctness tests", numtests - passed);
else
CCTK_VInfo(CCTK_THORNSTRING, "%d/%d tests passed ", passed, numtests);
return;
}
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