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diff --git a/eigen-systems.c b/eigen-systems.c
index f7e798d5..ff1a0fa4 100644
--- a/eigen-systems.c
+++ b/eigen-systems.c

@@ -43,18 +43,22 @@ struct eigen_cache {

static int eigen_symm (lua_State *L);

static int eigen_symmv (lua_State *L);

+#ifdef LNUM_COMPLEX

static int eigen_herm (lua_State *L);

static int eigen_hermv (lua_State *L);

static int eigen_nonsymm (lua_State *L);

static int eigen_nonsymmv (lua_State *L);

static int schur_decomp (lua_State *L);

+#endif

static int eigen_cache_free (lua_State *L);

static void eigen_push_cache (lua_State *L);

static struct eigen_symm_cache * eigen_cache_symm_set (lua_State *L, size_t n);

+#ifdef LNUM_COMPLEX

static struct eigen_herm_cache * eigen_cache_herm_set (lua_State *L, size_t n);

static struct eigen_nonsymm_cache * eigen_cache_nonsymm_set (lua_State *L, size_t n);

+#endif

static const struct luaL_Reg eigen_cache_methods[] = {

{"__gc", eigen_cache_free},

@@ -64,11 +68,13 @@ static const struct luaL_Reg eigen_cache_methods[] = {

static const struct luaL_Reg eigen_functions[] = {

{"eigs", eigen_symm},

{"eigsv", eigen_symmv},

+#ifdef LNUM_COMPLEX

{"eigh", eigen_herm},

{"eighv", eigen_hermv},

{"eigns", eigen_nonsymm},

{"eignsv", eigen_nonsymmv},

{"schur", schur_decomp},

+#endif

{NULL, NULL}

};

@@ -161,6 +167,7 @@ eigen_cache_symm_set (lua_State *L, size_t n)

return cache->symm;

}

+#ifdef LNUM_COMPLEX

struct eigen_herm_cache *

eigen_cache_herm_set (lua_State *L, size_t n)

{

@@ -210,6 +217,7 @@ eigen_cache_nonsymm_set (lua_State *L, size_t n)

return cache->nonsymm;

}

+#endif

int

eigen_symm_raw (lua_State *L, int compute_evecs)

@@ -264,6 +272,7 @@ eigen_symmv (lua_State *L)

return eigen_symm_raw (L, 1);

}

+#ifdef LNUM_COMPLEX

static int

eigen_herm_raw (lua_State *L, int compute_evecs)

{

@@ -418,6 +427,7 @@ schur_decomp (lua_State *L)

return 2;

}

+#endif

void

eigen_register (lua_State *L)