nmatrix.h in nmatrix-0.0.5

- old
+ new

@@ -321,9 +321,11 @@
 #define NM_MIN(a,b) (((a)>(b))?(b):(a))
 #define NM_SWAP(a,b,tmp) {(tmp)=(a);(a)=(b);(b)=(tmp);}
 
 #define NM_CHECK_ALLOC(x) if (!x) rb_raise(rb_eNoMemError, "insufficient memory");
 
+#define RB_FILE_EXISTS(fn)   (rb_funcall(rb_const_get(rb_cObject, rb_intern("File")), rb_intern("exists?"), 1, (fn)) == Qtrue)
+
 #define CheckNMatrixType(v)   if (TYPE(v) != T_DATA || (RDATA(v)->dfree != (RUBY_DATA_FUNC)nm_delete && RDATA(v)->dfree != (RUBY_DATA_FUNC)nm_delete_ref)) rb_raise(rb_eTypeError, "expected NMatrix on left-hand side of operation");
 
 #define NM_IsNMatrix(obj) \
   (rb_obj_is_kind_of(obj, cNMatrix) == Qtrue)
 