diff options
Diffstat (limited to 'matrix/mmatrix.c')
| -rw-r--r-- | matrix/mmatrix.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/matrix/mmatrix.c b/matrix/mmatrix.c index ab15197..81f8dfc 100644 --- a/matrix/mmatrix.c +++ b/matrix/mmatrix.c @@ -29,5 +29,34 @@ const char *nerv_matrix_(tname) = "nerv.MMatrixDouble"; #define host_matrix_(NAME) host_matrix_int_##NAME #define nerv_matrix_(NAME) nerv_matrix_host_int_##NAME const char *nerv_matrix_(tname) = "nerv.MMatrixInt"; +#define MMATRIX_INIT(L) host_matrix_(init_extra)(L) + +static const luaL_Reg nerv_matrix_(extra_methods_int)[]; +static void host_matrix_(init_extra)(lua_State *L) { + luaN_append_methods(L, nerv_matrix_(extra_methods_int)); +} + #include "generic/mmatrix.c" +static int nerv_matrix_(perm_gen)(lua_State *L) { + int i, ncol = luaL_checkinteger(L, 1); + Matrix *self = nerv_matrix_(new_)(L, 1, ncol); + long *prow = self->data.i; + for (i = 0; i < ncol; i++) + prow[i] = i; + for (i = ncol - 1; i >= 0; i--) + { + size_t j = rand() % (i + 1); + long tmp = prow[i]; + prow[i] = prow[j]; + prow[j] = tmp; + } + luaT_pushudata(L, self, nerv_matrix_(tname)); + return 1; +} + +static const luaL_Reg nerv_matrix_(extra_methods_int)[] = { + {"perm_gen", nerv_matrix_(perm_gen)}, + {NULL, NULL} +}; + |