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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/fastos/app.h>
#include <vespa/searchlib/bitcompression/compression.h>
#include <vector>
class ExpGolombApp : public FastOS_Application
{
void usage();
int testExpGolomb64(int kValue);
int testExpGolomb64le(int kValue);
int Main() override;
};
void
ExpGolombApp::usage()
{
printf("Usage: expgolomb testeg64 <kValue>]\n");
fflush(stdout);
}
int
ExpGolombApp::testExpGolomb64(int kValue)
{
std::vector<uint64_t> myrand;
for (int i = 0; i < 10000; ++i) {
uint64_t rval = rand();
rval <<= 30;
rval |= rand();
myrand.push_back(rval);
}
for (int i = 0; i < 10000; ++i) {
uint64_t rval = rand();
rval <<= 30;
rval |= rand();
uint32_t bits = (rand() & 63);
rval &= ((UINT64_C(1) << bits) - 1);
myrand.push_back(rval);
}
typedef search::bitcompression::EncodeContext64BE EC;
EC e;
search::ComprFileWriteContext wc(e);
wc.allocComprBuf(32768, 32768);
e.setupWrite(wc);
int rsize = myrand.size();
for (int i = 0; i < rsize; ++i) {
e.encodeExpGolomb(myrand[i], kValue);
if (e._valI >= e._valE)
wc.writeComprBuffer(false);
}
e.flush();
UC64_DECODECONTEXT(o);
unsigned int length;
uint64_t val64;
UC64BE_SETUPBITS_NS(o, static_cast<const uint64_t *>(wc._comprBuf), 0, EC);
bool failure = false;
for (int i = 0; i < rsize; ++i) {
UC64BE_DECODEEXPGOLOMB(oVal, oCompr, oPreRead, oCacheInt,
kValue, EC);
if (val64 != myrand[i]) {
printf("FAILURE: TestExpGolomb64, val64=%"
PRIu64 ", myrand[%d]=%" PRIu64 "\n",
val64, i, myrand[i]);
failure = true;
}
}
if (!failure)
printf("SUCCESS: TestExpGolomb64\n");
return failure ? 1 : 0;
}
int
ExpGolombApp::testExpGolomb64le(int kValue)
{
std::vector<uint64_t> myrand;
for (int i = 0; i < 10000; ++i) {
uint64_t rval = rand();
rval <<= 30;
rval |= rand();
myrand.push_back(rval);
}
for (int i = 0; i < 10000; ++i) {
uint64_t rval = rand();
rval <<= 30;
rval |= rand();
uint32_t bits = (rand() & 63);
rval &= ((UINT64_C(1) << bits) - 1);
myrand.push_back(rval);
}
typedef search::bitcompression::EncodeContext64LE EC;
EC e;
search::ComprFileWriteContext wc(e);
wc.allocComprBuf(32768, 32768);
e.setupWrite(wc);
int rsize = myrand.size();
for (int i = 0; i < rsize; ++i) {
e.encodeExpGolomb(myrand[i], kValue);
if (e._valI >= e._valE)
wc.writeComprBuffer(false);
}
e.flush();
UC64_DECODECONTEXT(o);
unsigned int length;
uint64_t val64;
UC64LE_SETUPBITS_NS(o, static_cast<const uint64_t *>(wc._comprBuf), 0, EC);
bool failure = false;
for (int i = 0; i < rsize; ++i) {
UC64LE_DECODEEXPGOLOMB(oVal, oCompr, oPreRead, oCacheInt,
kValue, EC);
if (val64 != myrand[i]) {
printf("FAILURE: TestExpGolomb64le, val64=%"
PRIu64 ", myrand[%d]=%" PRIu64 "\n",
val64, i, myrand[i]);
failure = true;
}
}
if (!failure)
printf("SUCCESS: TestExpGolomb64le\n");
return failure ? 1 : 0;
}
int
ExpGolombApp::Main()
{
printf("Hello world\n");
if (_argc >= 2) {
if (strcmp(_argv[1], "testeg64") == 0) {
if (_argc < 3) {
fprintf(stderr, "Too few arguments\n");
usage();
return 1;
}
return testExpGolomb64(atoi(_argv[2]));
} else if (strcmp(_argv[1], "testeg64le") == 0) {
if (_argc < 3) {
fprintf(stderr, "Too few arguments\n");
usage();
return 1;
}
return testExpGolomb64le(atoi(_argv[2]));
} else {
fprintf(stderr, "Wrong arguments\n");
usage();
return 1;
}
} else {
fprintf(stderr, "Too few arguments\n");
usage();
return 1;
}
return 0;
}
FASTOS_MAIN(ExpGolombApp);
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