give a update_select_rows a more proper name

1 files changed, 18 insertions, 3 deletions

diff --git a/nerv/matrix/generic/cumatrix.c b/nerv/matrix/generic/cumatrix.c
index df858e6..95a0132 100644
--- a/nerv/matrix/generic/cumatrix.c
+++ b/nerv/matrix/generic/cumatrix.c
@@ -331,7 +331,7 @@ static int nerv_matrix_(lua_scale_rows_by_row)(lua_State *L) {
 }
 
 #ifdef __NERV_FUTURE_CUDA_7
-static int nerv_matrix_(lua_update_select_rows)(lua_State *L) {
+static int nerv_matrix_(lua_update_select_rows_by_rowidx)(lua_State *L) {
     /* update c's select rows,
      * i.e. c[idx[i]] = c[idx[i]] * (1 - beta * alpha) + a[i] * alpha */
     Status status;
@@ -340,7 +340,21 @@ static int nerv_matrix_(lua_update_select_rows)(lua_State *L) {
     const Matrix *idx = luaT_checkudata(L, 3, nerv_matrix_(tname));
     MATRIX_ELEM alpha = luaL_checknumber(L, 4);
     MATRIX_ELEM beta = luaL_checknumber(L, 5);
-    nerv_matrix_(update_select_rows)(c, a, idx, alpha, beta, &status);
+    nerv_matrix_(update_select_rows_by_rowidx)(c, a, idx, alpha, beta, &status);
+    NERV_LUA_CHECK_STATUS(L, status);
+    return 0;
+}
+
+static int nerv_matrix_(lua_update_select_rows_by_colidx)(lua_State *L) {
+    /* update c's select rows,
+     * i.e. c[idx[i]] = c[idx[i]] * (1 - beta * alpha) + a[i] * alpha */
+    Status status;
+    Matrix *c = luaT_checkudata(L, 1, nerv_matrix_(tname));
+    const Matrix *a = luaT_checkudata(L, 2, nerv_matrix_(tname));
+    const Matrix *idx = luaT_checkudata(L, 3, nerv_matrix_(tname));
+    MATRIX_ELEM alpha = luaL_checknumber(L, 4);
+    MATRIX_ELEM beta = luaL_checknumber(L, 5);
+    nerv_matrix_(update_select_rows_by_colidx)(c, a, idx, alpha, beta, &status);
     NERV_LUA_CHECK_STATUS(L, status);
     return 0;
 }
@@ -381,7 +395,8 @@ static const luaL_Reg nerv_matrix_(extra_methods)[] = {
     {"scale_rows_by_row", nerv_matrix_(lua_scale_rows_by_row)},
     {"scale_rows_by_col", nerv_matrix_(lua_scale_rows_by_col)},
 #ifdef __NERV_FUTURE_CUDA_7
-    {"update_select_rows", nerv_matrix_(lua_update_select_rows)},
+    {"update_select_rows_by_rowidx", nerv_matrix_(lua_update_select_rows_by_rowidx)},
+    {"update_select_rows_by_colidx", nerv_matrix_(lua_update_select_rows_by_colidx)},
 #endif
     {NULL, NULL}
 };