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-rw-r--r--doc/source/reference/c-api.array.rst1
1 files changed, 1 insertions, 0 deletions
diff --git a/doc/source/reference/c-api.array.rst b/doc/source/reference/c-api.array.rst
index 8736cbc3f..6ab8ef6a2 100644
--- a/doc/source/reference/c-api.array.rst
+++ b/doc/source/reference/c-api.array.rst
@@ -289,6 +289,7 @@ From scratch
Fill the array pointed to by *obj* ---which must be a (subclass
of) bigndarray---with the contents of *val* (evaluated as a byte).
+ This is a macro that call memset, so obj must be contiguous in memory.
.. cfunction:: PyObject* PyArray_Zeros(int nd, npy_intp* dims, PyArray_Descr* dtype, int fortran)