diff --git a/nac3core/irrt/irrt.cpp b/nac3core/irrt/irrt.cpp index ce8ce625e..1bedd84f4 100644 --- a/nac3core/irrt/irrt.cpp +++ b/nac3core/irrt/irrt.cpp @@ -1,336 +1,5 @@ -using int8_t = _BitInt(8); -using uint8_t = unsigned _BitInt(8); -using int32_t = _BitInt(32); -using uint32_t = unsigned _BitInt(32); -using int64_t = _BitInt(64); -using uint64_t = unsigned _BitInt(64); - -// NDArray indices are always `uint32_t`. -using NDIndex = uint32_t; -// The type of an index or a value describing the length of a range/slice is always `int32_t`. -using SliceIndex = int32_t; - -namespace { -template -const T& max(const T& a, const T& b) { - return a > b ? a : b; -} - -template -const T& min(const T& a, const T& b) { - return a > b ? b : a; -} - -// adapted from GNU Scientific Library: https://git.savannah.gnu.org/cgit/gsl.git/tree/sys/pow_int.c -// need to make sure `exp >= 0` before calling this function -template -T __nac3_int_exp_impl(T base, T exp) { - T res = 1; - /* repeated squaring method */ - do { - if (exp & 1) { - res *= base; /* for n odd */ - } - exp >>= 1; - base *= base; - } while (exp); - return res; -} - -template -SizeT __nac3_ndarray_calc_size_impl(const SizeT* list_data, SizeT list_len, SizeT begin_idx, SizeT end_idx) { - __builtin_assume(end_idx <= list_len); - - SizeT num_elems = 1; - for (SizeT i = begin_idx; i < end_idx; ++i) { - SizeT val = list_data[i]; - __builtin_assume(val > 0); - num_elems *= val; - } - return num_elems; -} - -template -void __nac3_ndarray_calc_nd_indices_impl(SizeT index, const SizeT* dims, SizeT num_dims, NDIndex* idxs) { - SizeT stride = 1; - for (SizeT dim = 0; dim < num_dims; dim++) { - SizeT i = num_dims - dim - 1; - __builtin_assume(dims[i] > 0); - idxs[i] = (index / stride) % dims[i]; - stride *= dims[i]; - } -} - -template -SizeT __nac3_ndarray_flatten_index_impl(const SizeT* dims, SizeT num_dims, const NDIndex* indices, SizeT num_indices) { - SizeT idx = 0; - SizeT stride = 1; - for (SizeT i = 0; i < num_dims; ++i) { - SizeT ri = num_dims - i - 1; - if (ri < num_indices) { - idx += stride * indices[ri]; - } - - __builtin_assume(dims[i] > 0); - stride *= dims[ri]; - } - return idx; -} - -template -void __nac3_ndarray_calc_broadcast_impl(const SizeT* lhs_dims, - SizeT lhs_ndims, - const SizeT* rhs_dims, - SizeT rhs_ndims, - SizeT* out_dims) { - SizeT max_ndims = lhs_ndims > rhs_ndims ? lhs_ndims : rhs_ndims; - - for (SizeT i = 0; i < max_ndims; ++i) { - const SizeT* lhs_dim_sz = i < lhs_ndims ? &lhs_dims[lhs_ndims - i - 1] : nullptr; - const SizeT* rhs_dim_sz = i < rhs_ndims ? &rhs_dims[rhs_ndims - i - 1] : nullptr; - SizeT* out_dim = &out_dims[max_ndims - i - 1]; - - if (lhs_dim_sz == nullptr) { - *out_dim = *rhs_dim_sz; - } else if (rhs_dim_sz == nullptr) { - *out_dim = *lhs_dim_sz; - } else if (*lhs_dim_sz == 1) { - *out_dim = *rhs_dim_sz; - } else if (*rhs_dim_sz == 1) { - *out_dim = *lhs_dim_sz; - } else if (*lhs_dim_sz == *rhs_dim_sz) { - *out_dim = *lhs_dim_sz; - } else { - __builtin_unreachable(); - } - } -} - -template -void __nac3_ndarray_calc_broadcast_idx_impl(const SizeT* src_dims, - SizeT src_ndims, - const NDIndex* in_idx, - NDIndex* out_idx) { - for (SizeT i = 0; i < src_ndims; ++i) { - SizeT src_i = src_ndims - i - 1; - out_idx[src_i] = src_dims[src_i] == 1 ? 0 : in_idx[src_i]; - } -} -} // namespace - -extern "C" { -#define DEF_nac3_int_exp_(T) \ - T __nac3_int_exp_##T(T base, T exp) { \ - return __nac3_int_exp_impl(base, exp); \ - } - -DEF_nac3_int_exp_(int32_t) DEF_nac3_int_exp_(int64_t) DEF_nac3_int_exp_(uint32_t) DEF_nac3_int_exp_(uint64_t) - - SliceIndex __nac3_slice_index_bound(SliceIndex i, const SliceIndex len) { - if (i < 0) { - i = len + i; - } - if (i < 0) { - return 0; - } else if (i > len) { - return len; - } - return i; -} - -SliceIndex __nac3_range_slice_len(const SliceIndex start, const SliceIndex end, const SliceIndex step) { - SliceIndex diff = end - start; - if (diff > 0 && step > 0) { - return ((diff - 1) / step) + 1; - } else if (diff < 0 && step < 0) { - return ((diff + 1) / step) + 1; - } else { - return 0; - } -} - -// Handle list assignment and dropping part of the list when -// both dest_step and src_step are +1. -// - All the index must *not* be out-of-bound or negative, -// - The end index is *inclusive*, -// - The length of src and dest slice size should already -// be checked: if dest.step == 1 then len(src) <= len(dest) else len(src) == len(dest) -SliceIndex __nac3_list_slice_assign_var_size(SliceIndex dest_start, - SliceIndex dest_end, - SliceIndex dest_step, - uint8_t* dest_arr, - SliceIndex dest_arr_len, - SliceIndex src_start, - SliceIndex src_end, - SliceIndex src_step, - uint8_t* src_arr, - SliceIndex src_arr_len, - const SliceIndex size) { - /* if dest_arr_len == 0, do nothing since we do not support extending list */ - if (dest_arr_len == 0) - return dest_arr_len; - /* if both step is 1, memmove directly, handle the dropping of the list, and shrink size */ - if (src_step == dest_step && dest_step == 1) { - const SliceIndex src_len = (src_end >= src_start) ? (src_end - src_start + 1) : 0; - const SliceIndex dest_len = (dest_end >= dest_start) ? (dest_end - dest_start + 1) : 0; - if (src_len > 0) { - __builtin_memmove(dest_arr + dest_start * size, src_arr + src_start * size, src_len * size); - } - if (dest_len > 0) { - /* dropping */ - __builtin_memmove(dest_arr + (dest_start + src_len) * size, dest_arr + (dest_end + 1) * size, - (dest_arr_len - dest_end - 1) * size); - } - /* shrink size */ - return dest_arr_len - (dest_len - src_len); - } - /* if two range overlaps, need alloca */ - uint8_t need_alloca = (dest_arr == src_arr) - && !(max(dest_start, dest_end) < min(src_start, src_end) - || max(src_start, src_end) < min(dest_start, dest_end)); - if (need_alloca) { - uint8_t* tmp = reinterpret_cast(__builtin_alloca(src_arr_len * size)); - __builtin_memcpy(tmp, src_arr, src_arr_len * size); - src_arr = tmp; - } - SliceIndex src_ind = src_start; - SliceIndex dest_ind = dest_start; - for (; (src_step > 0) ? (src_ind <= src_end) : (src_ind >= src_end); src_ind += src_step, dest_ind += dest_step) { - /* for constant optimization */ - if (size == 1) { - __builtin_memcpy(dest_arr + dest_ind, src_arr + src_ind, 1); - } else if (size == 4) { - __builtin_memcpy(dest_arr + dest_ind * 4, src_arr + src_ind * 4, 4); - } else if (size == 8) { - __builtin_memcpy(dest_arr + dest_ind * 8, src_arr + src_ind * 8, 8); - } else { - /* memcpy for var size, cannot overlap after previous alloca */ - __builtin_memcpy(dest_arr + dest_ind * size, src_arr + src_ind * size, size); - } - } - /* only dest_step == 1 can we shrink the dest list. */ - /* size should be ensured prior to calling this function */ - if (dest_step == 1 && dest_end >= dest_start) { - __builtin_memmove(dest_arr + dest_ind * size, dest_arr + (dest_end + 1) * size, - (dest_arr_len - dest_end - 1) * size); - return dest_arr_len - (dest_end - dest_ind) - 1; - } - return dest_arr_len; -} - -int32_t __nac3_isinf(double x) { - return __builtin_isinf(x); -} - -int32_t __nac3_isnan(double x) { - return __builtin_isnan(x); -} - -double tgamma(double arg); - -double __nac3_gamma(double z) { - // Handling for denormals - // | x | Python gamma(x) | C tgamma(x) | - // --- | ----------------- | --------------- | ----------- | - // (1) | nan | nan | nan | - // (2) | -inf | -inf | inf | - // (3) | inf | inf | inf | - // (4) | 0.0 | inf | inf | - // (5) | {-1.0, -2.0, ...} | inf | nan | - - // (1)-(3) - if (__builtin_isinf(z) || __builtin_isnan(z)) { - return z; - } - - double v = tgamma(z); - - // (4)-(5) - return __builtin_isinf(v) || __builtin_isnan(v) ? __builtin_inf() : v; -} - -double lgamma(double arg); - -double __nac3_gammaln(double x) { - // libm's handling of value overflows differs from scipy: - // - scipy: gammaln(-inf) -> -inf - // - libm : lgamma(-inf) -> inf - - if (__builtin_isinf(x)) { - return x; - } - - return lgamma(x); -} - -double j0(double x); - -double __nac3_j0(double x) { - // libm's handling of value overflows differs from scipy: - // - scipy: j0(inf) -> nan - // - libm : j0(inf) -> 0.0 - - if (__builtin_isinf(x)) { - return __builtin_nan(""); - } - - return j0(x); -} - -uint32_t __nac3_ndarray_calc_size(const uint32_t* list_data, uint32_t list_len, uint32_t begin_idx, uint32_t end_idx) { - return __nac3_ndarray_calc_size_impl(list_data, list_len, begin_idx, end_idx); -} - -uint64_t -__nac3_ndarray_calc_size64(const uint64_t* list_data, uint64_t list_len, uint64_t begin_idx, uint64_t end_idx) { - return __nac3_ndarray_calc_size_impl(list_data, list_len, begin_idx, end_idx); -} - -void __nac3_ndarray_calc_nd_indices(uint32_t index, const uint32_t* dims, uint32_t num_dims, NDIndex* idxs) { - __nac3_ndarray_calc_nd_indices_impl(index, dims, num_dims, idxs); -} - -void __nac3_ndarray_calc_nd_indices64(uint64_t index, const uint64_t* dims, uint64_t num_dims, NDIndex* idxs) { - __nac3_ndarray_calc_nd_indices_impl(index, dims, num_dims, idxs); -} - -uint32_t -__nac3_ndarray_flatten_index(const uint32_t* dims, uint32_t num_dims, const NDIndex* indices, uint32_t num_indices) { - return __nac3_ndarray_flatten_index_impl(dims, num_dims, indices, num_indices); -} - -uint64_t -__nac3_ndarray_flatten_index64(const uint64_t* dims, uint64_t num_dims, const NDIndex* indices, uint64_t num_indices) { - return __nac3_ndarray_flatten_index_impl(dims, num_dims, indices, num_indices); -} - -void __nac3_ndarray_calc_broadcast(const uint32_t* lhs_dims, - uint32_t lhs_ndims, - const uint32_t* rhs_dims, - uint32_t rhs_ndims, - uint32_t* out_dims) { - return __nac3_ndarray_calc_broadcast_impl(lhs_dims, lhs_ndims, rhs_dims, rhs_ndims, out_dims); -} - -void __nac3_ndarray_calc_broadcast64(const uint64_t* lhs_dims, - uint64_t lhs_ndims, - const uint64_t* rhs_dims, - uint64_t rhs_ndims, - uint64_t* out_dims) { - return __nac3_ndarray_calc_broadcast_impl(lhs_dims, lhs_ndims, rhs_dims, rhs_ndims, out_dims); -} - -void __nac3_ndarray_calc_broadcast_idx(const uint32_t* src_dims, - uint32_t src_ndims, - const NDIndex* in_idx, - NDIndex* out_idx) { - __nac3_ndarray_calc_broadcast_idx_impl(src_dims, src_ndims, in_idx, out_idx); -} - -void __nac3_ndarray_calc_broadcast_idx64(const uint64_t* src_dims, - uint64_t src_ndims, - const NDIndex* in_idx, - NDIndex* out_idx) { - __nac3_ndarray_calc_broadcast_idx_impl(src_dims, src_ndims, in_idx, out_idx); -} -} // extern "C" \ No newline at end of file +#include +#include +#include +#include +#include diff --git a/nac3core/irrt/irrt/int_types.hpp b/nac3core/irrt/irrt/int_types.hpp new file mode 100644 index 000000000..879009617 --- /dev/null +++ b/nac3core/irrt/irrt/int_types.hpp @@ -0,0 +1,13 @@ +#pragma once + +using int8_t = _BitInt(8); +using uint8_t = unsigned _BitInt(8); +using int32_t = _BitInt(32); +using uint32_t = unsigned _BitInt(32); +using int64_t = _BitInt(64); +using uint64_t = unsigned _BitInt(64); + +// NDArray indices are always `uint32_t`. +using NDIndex = uint32_t; +// The type of an index or a value describing the length of a range/slice is always `int32_t`. +using SliceIndex = int32_t; \ No newline at end of file diff --git a/nac3core/irrt/irrt/list.hpp b/nac3core/irrt/irrt/list.hpp new file mode 100644 index 000000000..098416398 --- /dev/null +++ b/nac3core/irrt/irrt/list.hpp @@ -0,0 +1,75 @@ +#pragma once + +#include +#include + +extern "C" { +// Handle list assignment and dropping part of the list when +// both dest_step and src_step are +1. +// - All the index must *not* be out-of-bound or negative, +// - The end index is *inclusive*, +// - The length of src and dest slice size should already +// be checked: if dest.step == 1 then len(src) <= len(dest) else len(src) == len(dest) +SliceIndex __nac3_list_slice_assign_var_size(SliceIndex dest_start, + SliceIndex dest_end, + SliceIndex dest_step, + uint8_t* dest_arr, + SliceIndex dest_arr_len, + SliceIndex src_start, + SliceIndex src_end, + SliceIndex src_step, + uint8_t* src_arr, + SliceIndex src_arr_len, + const SliceIndex size) { + /* if dest_arr_len == 0, do nothing since we do not support extending list */ + if (dest_arr_len == 0) + return dest_arr_len; + /* if both step is 1, memmove directly, handle the dropping of the list, and shrink size */ + if (src_step == dest_step && dest_step == 1) { + const SliceIndex src_len = (src_end >= src_start) ? (src_end - src_start + 1) : 0; + const SliceIndex dest_len = (dest_end >= dest_start) ? (dest_end - dest_start + 1) : 0; + if (src_len > 0) { + __builtin_memmove(dest_arr + dest_start * size, src_arr + src_start * size, src_len * size); + } + if (dest_len > 0) { + /* dropping */ + __builtin_memmove(dest_arr + (dest_start + src_len) * size, dest_arr + (dest_end + 1) * size, + (dest_arr_len - dest_end - 1) * size); + } + /* shrink size */ + return dest_arr_len - (dest_len - src_len); + } + /* if two range overlaps, need alloca */ + uint8_t need_alloca = (dest_arr == src_arr) + && !(max(dest_start, dest_end) < min(src_start, src_end) + || max(src_start, src_end) < min(dest_start, dest_end)); + if (need_alloca) { + uint8_t* tmp = reinterpret_cast(__builtin_alloca(src_arr_len * size)); + __builtin_memcpy(tmp, src_arr, src_arr_len * size); + src_arr = tmp; + } + SliceIndex src_ind = src_start; + SliceIndex dest_ind = dest_start; + for (; (src_step > 0) ? (src_ind <= src_end) : (src_ind >= src_end); src_ind += src_step, dest_ind += dest_step) { + /* for constant optimization */ + if (size == 1) { + __builtin_memcpy(dest_arr + dest_ind, src_arr + src_ind, 1); + } else if (size == 4) { + __builtin_memcpy(dest_arr + dest_ind * 4, src_arr + src_ind * 4, 4); + } else if (size == 8) { + __builtin_memcpy(dest_arr + dest_ind * 8, src_arr + src_ind * 8, 8); + } else { + /* memcpy for var size, cannot overlap after previous alloca */ + __builtin_memcpy(dest_arr + dest_ind * size, src_arr + src_ind * size, size); + } + } + /* only dest_step == 1 can we shrink the dest list. */ + /* size should be ensured prior to calling this function */ + if (dest_step == 1 && dest_end >= dest_start) { + __builtin_memmove(dest_arr + dest_ind * size, dest_arr + (dest_end + 1) * size, + (dest_arr_len - dest_end - 1) * size); + return dest_arr_len - (dest_end - dest_ind) - 1; + } + return dest_arr_len; +} +} // extern "C" \ No newline at end of file diff --git a/nac3core/irrt/irrt/math.hpp b/nac3core/irrt/irrt/math.hpp new file mode 100644 index 000000000..ff10f3f37 --- /dev/null +++ b/nac3core/irrt/irrt/math.hpp @@ -0,0 +1,93 @@ +#pragma once + +namespace { +// adapted from GNU Scientific Library: https://git.savannah.gnu.org/cgit/gsl.git/tree/sys/pow_int.c +// need to make sure `exp >= 0` before calling this function +template +T __nac3_int_exp_impl(T base, T exp) { + T res = 1; + /* repeated squaring method */ + do { + if (exp & 1) { + res *= base; /* for n odd */ + } + exp >>= 1; + base *= base; + } while (exp); + return res; +} +} // namespace + +#define DEF_nac3_int_exp_(T) \ + T __nac3_int_exp_##T(T base, T exp) { \ + return __nac3_int_exp_impl(base, exp); \ + } + +extern "C" { + +// Putting semicolons here to make clang-format not reformat this into +// a stair shape. +DEF_nac3_int_exp_(int32_t); +DEF_nac3_int_exp_(int64_t); +DEF_nac3_int_exp_(uint32_t); +DEF_nac3_int_exp_(uint64_t); + +int32_t __nac3_isinf(double x) { + return __builtin_isinf(x); +} + +int32_t __nac3_isnan(double x) { + return __builtin_isnan(x); +} + +double tgamma(double arg); + +double __nac3_gamma(double z) { + // Handling for denormals + // | x | Python gamma(x) | C tgamma(x) | + // --- | ----------------- | --------------- | ----------- | + // (1) | nan | nan | nan | + // (2) | -inf | -inf | inf | + // (3) | inf | inf | inf | + // (4) | 0.0 | inf | inf | + // (5) | {-1.0, -2.0, ...} | inf | nan | + + // (1)-(3) + if (__builtin_isinf(z) || __builtin_isnan(z)) { + return z; + } + + double v = tgamma(z); + + // (4)-(5) + return __builtin_isinf(v) || __builtin_isnan(v) ? __builtin_inf() : v; +} + +double lgamma(double arg); + +double __nac3_gammaln(double x) { + // libm's handling of value overflows differs from scipy: + // - scipy: gammaln(-inf) -> -inf + // - libm : lgamma(-inf) -> inf + + if (__builtin_isinf(x)) { + return x; + } + + return lgamma(x); +} + +double j0(double x); + +double __nac3_j0(double x) { + // libm's handling of value overflows differs from scipy: + // - scipy: j0(inf) -> nan + // - libm : j0(inf) -> 0.0 + + if (__builtin_isinf(x)) { + return __builtin_nan(""); + } + + return j0(x); +} +} \ No newline at end of file diff --git a/nac3core/irrt/irrt/math_util.hpp b/nac3core/irrt/irrt/math_util.hpp new file mode 100644 index 000000000..7299df7d8 --- /dev/null +++ b/nac3core/irrt/irrt/math_util.hpp @@ -0,0 +1,13 @@ +#pragma once + +namespace { +template +const T& max(const T& a, const T& b) { + return a > b ? a : b; +} + +template +const T& min(const T& a, const T& b) { + return a > b ? b : a; +} +} // namespace \ No newline at end of file diff --git a/nac3core/irrt/irrt/ndarray.hpp b/nac3core/irrt/irrt/ndarray.hpp new file mode 100644 index 000000000..a946741b5 --- /dev/null +++ b/nac3core/irrt/irrt/ndarray.hpp @@ -0,0 +1,144 @@ +#pragma once + +#include + +namespace { +template +SizeT __nac3_ndarray_calc_size_impl(const SizeT* list_data, SizeT list_len, SizeT begin_idx, SizeT end_idx) { + __builtin_assume(end_idx <= list_len); + + SizeT num_elems = 1; + for (SizeT i = begin_idx; i < end_idx; ++i) { + SizeT val = list_data[i]; + __builtin_assume(val > 0); + num_elems *= val; + } + return num_elems; +} + +template +void __nac3_ndarray_calc_nd_indices_impl(SizeT index, const SizeT* dims, SizeT num_dims, NDIndex* idxs) { + SizeT stride = 1; + for (SizeT dim = 0; dim < num_dims; dim++) { + SizeT i = num_dims - dim - 1; + __builtin_assume(dims[i] > 0); + idxs[i] = (index / stride) % dims[i]; + stride *= dims[i]; + } +} + +template +SizeT __nac3_ndarray_flatten_index_impl(const SizeT* dims, SizeT num_dims, const NDIndex* indices, SizeT num_indices) { + SizeT idx = 0; + SizeT stride = 1; + for (SizeT i = 0; i < num_dims; ++i) { + SizeT ri = num_dims - i - 1; + if (ri < num_indices) { + idx += stride * indices[ri]; + } + + __builtin_assume(dims[i] > 0); + stride *= dims[ri]; + } + return idx; +} + +template +void __nac3_ndarray_calc_broadcast_impl(const SizeT* lhs_dims, + SizeT lhs_ndims, + const SizeT* rhs_dims, + SizeT rhs_ndims, + SizeT* out_dims) { + SizeT max_ndims = lhs_ndims > rhs_ndims ? lhs_ndims : rhs_ndims; + + for (SizeT i = 0; i < max_ndims; ++i) { + const SizeT* lhs_dim_sz = i < lhs_ndims ? &lhs_dims[lhs_ndims - i - 1] : nullptr; + const SizeT* rhs_dim_sz = i < rhs_ndims ? &rhs_dims[rhs_ndims - i - 1] : nullptr; + SizeT* out_dim = &out_dims[max_ndims - i - 1]; + + if (lhs_dim_sz == nullptr) { + *out_dim = *rhs_dim_sz; + } else if (rhs_dim_sz == nullptr) { + *out_dim = *lhs_dim_sz; + } else if (*lhs_dim_sz == 1) { + *out_dim = *rhs_dim_sz; + } else if (*rhs_dim_sz == 1) { + *out_dim = *lhs_dim_sz; + } else if (*lhs_dim_sz == *rhs_dim_sz) { + *out_dim = *lhs_dim_sz; + } else { + __builtin_unreachable(); + } + } +} + +template +void __nac3_ndarray_calc_broadcast_idx_impl(const SizeT* src_dims, + SizeT src_ndims, + const NDIndex* in_idx, + NDIndex* out_idx) { + for (SizeT i = 0; i < src_ndims; ++i) { + SizeT src_i = src_ndims - i - 1; + out_idx[src_i] = src_dims[src_i] == 1 ? 0 : in_idx[src_i]; + } +} +} // namespace + +extern "C" { +uint32_t __nac3_ndarray_calc_size(const uint32_t* list_data, uint32_t list_len, uint32_t begin_idx, uint32_t end_idx) { + return __nac3_ndarray_calc_size_impl(list_data, list_len, begin_idx, end_idx); +} + +uint64_t +__nac3_ndarray_calc_size64(const uint64_t* list_data, uint64_t list_len, uint64_t begin_idx, uint64_t end_idx) { + return __nac3_ndarray_calc_size_impl(list_data, list_len, begin_idx, end_idx); +} + +void __nac3_ndarray_calc_nd_indices(uint32_t index, const uint32_t* dims, uint32_t num_dims, NDIndex* idxs) { + __nac3_ndarray_calc_nd_indices_impl(index, dims, num_dims, idxs); +} + +void __nac3_ndarray_calc_nd_indices64(uint64_t index, const uint64_t* dims, uint64_t num_dims, NDIndex* idxs) { + __nac3_ndarray_calc_nd_indices_impl(index, dims, num_dims, idxs); +} + +uint32_t +__nac3_ndarray_flatten_index(const uint32_t* dims, uint32_t num_dims, const NDIndex* indices, uint32_t num_indices) { + return __nac3_ndarray_flatten_index_impl(dims, num_dims, indices, num_indices); +} + +uint64_t +__nac3_ndarray_flatten_index64(const uint64_t* dims, uint64_t num_dims, const NDIndex* indices, uint64_t num_indices) { + return __nac3_ndarray_flatten_index_impl(dims, num_dims, indices, num_indices); +} + +void __nac3_ndarray_calc_broadcast(const uint32_t* lhs_dims, + uint32_t lhs_ndims, + const uint32_t* rhs_dims, + uint32_t rhs_ndims, + uint32_t* out_dims) { + return __nac3_ndarray_calc_broadcast_impl(lhs_dims, lhs_ndims, rhs_dims, rhs_ndims, out_dims); +} + +void __nac3_ndarray_calc_broadcast64(const uint64_t* lhs_dims, + uint64_t lhs_ndims, + const uint64_t* rhs_dims, + uint64_t rhs_ndims, + uint64_t* out_dims) { + return __nac3_ndarray_calc_broadcast_impl(lhs_dims, lhs_ndims, rhs_dims, rhs_ndims, out_dims); +} + +void __nac3_ndarray_calc_broadcast_idx(const uint32_t* src_dims, + uint32_t src_ndims, + const NDIndex* in_idx, + NDIndex* out_idx) { + __nac3_ndarray_calc_broadcast_idx_impl(src_dims, src_ndims, in_idx, out_idx); +} + +void __nac3_ndarray_calc_broadcast_idx64(const uint64_t* src_dims, + uint64_t src_ndims, + const NDIndex* in_idx, + NDIndex* out_idx) { + __nac3_ndarray_calc_broadcast_idx_impl(src_dims, src_ndims, in_idx, out_idx); +} +} \ No newline at end of file diff --git a/nac3core/irrt/irrt/slice.hpp b/nac3core/irrt/irrt/slice.hpp new file mode 100644 index 000000000..e2ce2d8c0 --- /dev/null +++ b/nac3core/irrt/irrt/slice.hpp @@ -0,0 +1,28 @@ +#pragma once + +#include + +extern "C" { +SliceIndex __nac3_slice_index_bound(SliceIndex i, const SliceIndex len) { + if (i < 0) { + i = len + i; + } + if (i < 0) { + return 0; + } else if (i > len) { + return len; + } + return i; +} + +SliceIndex __nac3_range_slice_len(const SliceIndex start, const SliceIndex end, const SliceIndex step) { + SliceIndex diff = end - start; + if (diff > 0 && step > 0) { + return ((diff - 1) / step) + 1; + } else if (diff < 0 && step < 0) { + return ((diff + 1) / step) + 1; + } else { + return 0; + } +} +} \ No newline at end of file