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#ifdef MATRIX_GENERIC
#include "../../common.h"
#include "matrix.h"
extern const char *nerv_matrix_tname;
const char *nerv_float_matrix_tname = "nerv.FloatMatrix";
void nerv_float_matrix_(data_free)(Matrix *self) {
if (--(*self->data_ref) == 0)
MATRIX_DATA_FREE(self->data.f);
}
void nerv_float_matrix_(data_retain)(Matrix *self) {
(*self->data_ref)++;
}
int nerv_float_matrix_(new)(lua_State *L) {
Matrix *self = (Matrix *)malloc(sizeof(Matrix));
self->nrow = luaL_checkinteger(L, 1);
self->ncol = luaL_checkinteger(L, 2);
self->nmax = self->nrow * self->ncol;
self->stride = MATRIX_DATA_STRIDE(self->ncol);
self->data.f = MATRIX_DATA_ALLOC(self->stride * self->nrow);
self->data_ref = (long *)malloc(sizeof(long));
*self->data_ref = 0;
nerv_float_matrix_(data_retain)(self);
luaT_pushudata(L, self, nerv_float_matrix_tname);
return 1;
}
int nerv_float_matrix_(destroy)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_float_matrix_tname);
nerv_float_matrix_(data_free)(self);
return 0;
}
int nerv_float_matrix_(get_elem)(lua_State *L);
int nerv_float_matrix_(set_elem)(lua_State *L);
static Matrix *nerv_float_matrix_(getrow)(Matrix *self, int row) {
Matrix *prow = (Matrix *)malloc(sizeof(Matrix));
prow->ncol = self->ncol;
prow->nrow = 1;
prow->stride = self->stride;
prow->nmax = prow->ncol;
prow->data.f = (float *)((char *)self->data.f + row * self->stride);
prow->data_ref = self->data_ref;
nerv_float_matrix_(data_retain)(self);
return prow;
}
static int nerv_float_matrix_(newindex)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_float_matrix_tname);
if (lua_isnumber(L, 2))
{
int idx = luaL_checkinteger(L, 2);
if (self->nrow == 1)
{
if (idx < 0 || idx >= self->ncol)
nerv_error(L, "index must be within range [0, %d)", self->ncol);
self->data.f[idx] = luaL_checknumber(L, 3);
}
else
nerv_error(L, "cannot assign a scalar to row vector");
lua_pushboolean(L, 1);
return 2;
}
else
{
lua_pushboolean(L, 0);
return 1;
}
}
static int nerv_float_matrix_(index)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_float_matrix_tname);
if (lua_isnumber(L, 2))
{
int idx = luaL_checkinteger(L, 2);
if (self->nrow == 1)
{
if (idx < 0 || idx >= self->ncol)
nerv_error(L, "index must be within range [0, %d)", self->ncol);
lua_pushnumber(L, self->data.f[idx]);
}
else
{
if (idx < 0 || idx >= self->nrow)
nerv_error(L, "index must be within range [0, %d)", self->nrow);
luaT_pushudata(L, nerv_float_matrix_(getrow)(self, idx), nerv_float_matrix_tname);
}
lua_pushboolean(L, 1);
return 2;
}
else
{
lua_pushboolean(L, 0);
return 1;
}
}
static int nerv_float_matrix_(ncol)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_float_matrix_tname);
lua_pushinteger(L, self->ncol);
return 1;
}
static int nerv_float_matrix_(nrow)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_float_matrix_tname);
lua_pushinteger(L, self->nrow);
return 1;
}
static const luaL_Reg nerv_float_matrix_(methods)[] = {
{"get_elem", nerv_float_matrix_(get_elem)},
{"set_elem", nerv_float_matrix_(set_elem)},
{"ncol", nerv_float_matrix_(ncol)},
{"nrow", nerv_float_matrix_(nrow)},
{"__index__", nerv_float_matrix_(index)},
{"__newindex__", nerv_float_matrix_(newindex)},
{NULL, NULL}
};
void nerv_float_matrix_(init)(lua_State *L) {
luaT_newmetatable(L, nerv_float_matrix_tname, nerv_matrix_tname,
nerv_float_matrix_(new), nerv_float_matrix_(destroy), NULL);
luaL_register(L, NULL, nerv_float_matrix_(methods));
lua_pop(L, 1);
}
#endif
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