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Optionally track max value seen during copy.

This commit is contained in:
Ben Vanik 2015-01-04 04:57:40 -08:00
parent 56a04592d5
commit 34fb0e4a8a
2 changed files with 62 additions and 33 deletions
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62
src/poly/memory.cc
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@ -9,6 +9,8 @@
#include <poly/memory.h>
#include <algorithm>
#if !XE_LIKE_WIN32
#include <unistd.h>
#endif // !XE_LIKE_WIN32
@ -34,46 +36,70 @@ size_t page_size() {
// http://gnuradio.org/redmine/projects/gnuradio/repository/revisions/f2bc76cc65ffba51a141950f98e75364e49df874/entry/volk/kernels/volk/volk_32u_byteswap.h
// http://gnuradio.org/redmine/projects/gnuradio/repository/revisions/2c4c371885c31222362f70a1cd714415d1398021/entry/volk/kernels/volk/volk_64u_byteswap.h
void copy_and_swap_16_aligned(uint16_t* dest, const uint16_t* src,
size_t count) {
for (size_t i = 0; i < count; ++i) {
dest[i] = byte_swap(src[i]);
}
void copy_and_swap_16_aligned(uint16_t* dest, const uint16_t* src, size_t count,
uint16_t* out_max_value) {
return copy_and_swap_16_unaligned(dest, src, count, out_max_value);
}
void copy_and_swap_16_unaligned(uint16_t* dest, const uint16_t* src,
size_t count) {
size_t count, uint16_t* out_max_value) {
if (out_max_value) {
uint16_t max_value = 0;
for (size_t i = 0; i < count; ++i) {
uint16_t value = byte_swap(src[i]);
max_value = std::max(max_value, value);
dest[i] = value;
}
*out_max_value = max_value;
} else {
for (size_t i = 0; i < count; ++i) {
dest[i] = byte_swap(src[i]);
}
}
}
void copy_and_swap_32_aligned(uint32_t* dest, const uint32_t* src,
size_t count) {
for (size_t i = 0; i < count; ++i) {
dest[i] = byte_swap(src[i]);
}
void copy_and_swap_32_aligned(uint32_t* dest, const uint32_t* src, size_t count,
uint32_t* out_max_value) {
return copy_and_swap_32_unaligned(dest, src, count, out_max_value);
}
void copy_and_swap_32_unaligned(uint32_t* dest, const uint32_t* src,
size_t count) {
size_t count, uint32_t* out_max_value) {
if (out_max_value) {
uint32_t max_value = 0;
for (size_t i = 0; i < count; ++i) {
uint32_t value = byte_swap(src[i]);
max_value = std::max(max_value, value);
dest[i] = value;
}
*out_max_value = max_value;
} else {
for (size_t i = 0; i < count; ++i) {
dest[i] = byte_swap(src[i]);
}
}
}
void copy_and_swap_64_aligned(uint64_t* dest, const uint64_t* src,
size_t count) {
for (size_t i = 0; i < count; ++i) {
dest[i] = byte_swap(src[i]);
}
void copy_and_swap_64_aligned(uint64_t* dest, const uint64_t* src, size_t count,
uint64_t* out_max_value) {
return copy_and_swap_64_unaligned(dest, src, count, out_max_value);
}
void copy_and_swap_64_unaligned(uint64_t* dest, const uint64_t* src,
size_t count) {
size_t count, uint64_t* out_max_value) {
if (out_max_value) {
uint64_t max_value = 0;
for (size_t i = 0; i < count; ++i) {
uint64_t value = byte_swap(src[i]);
max_value = std::max(max_value, value);
dest[i] = value;
}
*out_max_value = max_value;
} else {
for (size_t i = 0; i < count; ++i) {
dest[i] = byte_swap(src[i]);
}
}
}
} // namespace poly

21
src/poly/memory.h
View File

@ -29,18 +29,21 @@ size_t hash_combine(size_t seed, const T& v, const Ts&... vs) {
size_t page_size();
void copy_and_swap_16_aligned(uint16_t* dest, const uint16_t* src,
size_t count);
void copy_and_swap_16_aligned(uint16_t* dest, const uint16_t* src, size_t count,
uint16_t* out_max_value = nullptr);
void copy_and_swap_16_unaligned(uint16_t* dest, const uint16_t* src,
size_t count);
void copy_and_swap_32_aligned(uint32_t* dest, const uint32_t* src,
size_t count);
size_t count,
uint16_t* out_max_value = nullptr);
void copy_and_swap_32_aligned(uint32_t* dest, const uint32_t* src, size_t count,
uint32_t* out_max_value = nullptr);
void copy_and_swap_32_unaligned(uint32_t* dest, const uint32_t* src,
size_t count);
void copy_and_swap_64_aligned(uint64_t* dest, const uint64_t* src,
size_t count);
size_t count,
uint32_t* out_max_value = nullptr);
void copy_and_swap_64_aligned(uint64_t* dest, const uint64_t* src, size_t count,
uint64_t* out_max_value = nullptr);
void copy_and_swap_64_unaligned(uint64_t* dest, const uint64_t* src,
size_t count);
size_t count,
uint64_t* out_max_value = nullptr);
template <typename T>
void copy_and_swap(T* dest, const T* src, size_t count) {