numpy · scratchmex · Dec 3, 2025 · Dec 3, 2025 · Dec 3, 2025 · Dec 3, 2025
diff --git a/doc/source/conf.py b/doc/source/conf.py
@@ -502,7 +502,7 @@ def setup(app):
 
 def _get_c_source_file(obj):
     if issubclass(obj, numpy.generic):
-        return r"_core/src/multiarray/scalartypes.c.src"
+        return r"_core/src/multiarray/scalartypes.cpp"
     elif obj is numpy.ndarray:
         return r"_core/src/multiarray/arrayobject.c"
     else:

diff --git a/numpy/_core/arrayprint.py b/numpy/_core/arrayprint.py
@@ -16,8 +16,8 @@
 # and by Travis Oliphant  2005-8-22 for numpy
 
 
-# Note: Both scalartypes.c.src and arrayprint.py implement strs for numpy
-# scalars but for different purposes. scalartypes.c.src has str/reprs for when
+# Note: Both scalartypes.cpp and arrayprint.py implement strs for numpy
+# scalars but for different purposes. scalartypes.cpp has str/reprs for when
 # the scalar is printed on its own, while arrayprint.py has strs for when
 # scalars are printed inside an ndarray. Only the latter strs are currently
 # user-customizable.
@@ -1485,7 +1485,7 @@ def __call__(self, x):
 def _void_scalar_to_string(x, is_repr=True):
     """
     Implements the repr for structured-void scalars. It is called from the
-    scalartypes.c.src code, and is placed here because it uses the elementwise
+    scalartypes.cpp code, and is placed here because it uses the elementwise
     formatters defined above.
     """
     options = format_options.get().copy()

diff --git a/numpy/_core/code_generators/genapi.py b/numpy/_core/code_generators/genapi.py
@@ -77,7 +77,7 @@ def get_processor():
              join('multiarray', 'nditer_templ.c.src'),
              join('multiarray', 'number.c'),
              join('multiarray', 'refcount.c'),
-             join('multiarray', 'scalartypes.c.src'),
+             join('multiarray', 'scalartypes.cpp'),
              join('multiarray', 'scalarapi.c'),
              join('multiarray', 'sequence.c'),
              join('multiarray', 'shape.c'),

diff --git a/numpy/_core/meson.build b/numpy/_core/meson.build
@@ -1182,7 +1182,7 @@ src_multiarray = multiarray_gen_headers + [
   'src/multiarray/npy_static_data.c',
   'src/multiarray/number.c',
   'src/multiarray/refcount.c',
-  src_file.process('src/multiarray/scalartypes.c.src'),
+  'src/multiarray/scalartypes.cpp',
   'src/multiarray/sequence.c',
   'src/multiarray/scalarapi.c',
   'src/multiarray/shape.c',

diff --git a/numpy/_core/src/common/npy_longdouble.h b/numpy/_core/src/common/npy_longdouble.h
@@ -1,9 +1,14 @@
 #ifndef NUMPY_CORE_SRC_COMMON_NPY_LONGDOUBLE_H_
 #define NUMPY_CORE_SRC_COMMON_NPY_LONGDOUBLE_H_
 
+
 #include "npy_config.h"
 #include "numpy/ndarraytypes.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* Convert a npy_longdouble to a python `long` integer.
  *
  * Results are rounded towards zero.
@@ -24,4 +29,8 @@ npy_longdouble_to_PyLong(npy_longdouble ldval);
 NPY_VISIBILITY_HIDDEN npy_longdouble
 npy_longdouble_from_PyLong(PyObject *long_obj);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_COMMON_NPY_LONGDOUBLE_H_ */
diff --git a/numpy/_core/src/multiarray/_datetime.h b/numpy/_core/src/multiarray/_datetime.h
@@ -1,6 +1,10 @@
 #ifndef NUMPY_CORE_SRC_MULTIARRAY__DATETIME_H_
 #define NUMPY_CORE_SRC_MULTIARRAY__DATETIME_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern NPY_NO_EXPORT char const *_datetime_strings[NPY_DATETIME_NUMUNITS];
 extern NPY_NO_EXPORT int _days_per_month_table[2][12];
 
@@ -335,4 +339,8 @@ datetime_hash(PyArray_DatetimeMetaData *meta, npy_datetime dt);
 NPY_NO_EXPORT npy_hash_t
 timedelta_hash(PyArray_DatetimeMetaData *meta, npy_timedelta td);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_MULTIARRAY__DATETIME_H_ */
diff --git a/numpy/_core/src/multiarray/array_api_standard.h b/numpy/_core/src/multiarray/array_api_standard.h
@@ -1,6 +1,9 @@
 #ifndef NUMPY_CORE_SRC_MULTIARRAY_ARRAY_API_STANDARD_H_
 #define NUMPY_CORE_SRC_MULTIARRAY_ARRAY_API_STANDARD_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 NPY_NO_EXPORT PyObject *
 array_device(PyObject *NPY_UNUSED(self), void *NPY_UNUSED(ignored));
@@ -11,4 +14,8 @@ array_to_device(PyObject *self, PyObject *args, PyObject *kwds);
 NPY_NO_EXPORT PyObject *
 array_array_namespace(PyObject *NPY_UNUSED(self), PyObject *args, PyObject *kwds);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_MULTIARRAY_ARRAY_API_STANDARD_H_ */
diff --git a/numpy/_core/src/multiarray/conversion_utils.h b/numpy/_core/src/multiarray/conversion_utils.h
@@ -3,6 +3,10 @@
 
 #include "numpy/ndarraytypes.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 NPY_NO_EXPORT int
 PyArray_IntpConverter(PyObject *obj, PyArray_Dims *seq);
 
@@ -122,4 +126,8 @@ extern NPY_NO_EXPORT NPY_TLS int evil_global_disable_warn_O4O8_flag;
 NPY_NO_EXPORT int
 _not_NoValue(PyObject *obj, PyObject **out);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_MULTIARRAY_CONVERSION_UTILS_H_ */
diff --git a/numpy/_core/src/multiarray/ctors.h b/numpy/_core/src/multiarray/ctors.h
@@ -1,6 +1,10 @@
 #ifndef NUMPY_CORE_SRC_MULTIARRAY_CTORS_H_
 #define NUMPY_CORE_SRC_MULTIARRAY_CTORS_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern NPY_NO_EXPORT const char *npy_no_copy_err_msg;
 
 
@@ -135,4 +139,8 @@ NPY_NO_EXPORT PyObject *
 PyArray_Empty_int(int nd, npy_intp const *dims, PyArray_Descr *descr,
                   PyArray_DTypeMeta *dtype, int is_f_order);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_MULTIARRAY_CTORS_H_ */
diff --git a/numpy/_core/src/multiarray/dragon4.h b/numpy/_core/src/multiarray/dragon4.h
@@ -41,6 +41,10 @@
 
 #include "numpy/arrayscalars.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* Half binary format */
 #define NPY_HALF_BINFMT_NAME IEEE_binary16
 
@@ -135,4 +139,8 @@ Dragon4_Scientific(PyObject *obj, DigitMode digit_mode, int precision,
                    int min_digits, int sign, TrimMode trim, int pad_left,
                    int exp_digits);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_MULTIARRAY_DRAGON4_H_ */
diff --git a/numpy/_core/src/multiarray/flagsobject.h b/numpy/_core/src/multiarray/flagsobject.h
@@ -1,6 +1,10 @@
 #ifndef NUMPY_CORE_SRC_FLAGSOBJECT_H_
 #define NUMPY_CORE_SRC_FLAGSOBJECT_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 
 /* Array Flags Object */
 typedef struct PyArrayFlagsObject {
@@ -19,4 +23,8 @@ NPY_NO_EXPORT void
 PyArray_UpdateFlags(PyArrayObject *ret, int flagmask);
 
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_FLAGSOBJECT_H_ */
diff --git a/numpy/_core/src/multiarray/mapping.h b/numpy/_core/src/multiarray/mapping.h
@@ -1,6 +1,10 @@
 #ifndef NUMPY_CORE_SRC_MULTIARRAY_MAPPING_H_
 #define NUMPY_CORE_SRC_MULTIARRAY_MAPPING_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern NPY_NO_EXPORT PyMappingMethods array_as_mapping;
 
 /* Indexing types */
@@ -184,4 +188,8 @@ NPY_NO_EXPORT PyObject *
 PyArray_MapIterArrayCopyIfOverlap(PyArrayObject * a, PyObject * index,
                                   int copy_if_overlap, PyArrayObject *extra_op);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_MULTIARRAY_MAPPING_H_ */
diff --git a/numpy/_core/src/multiarray/multiarraymodule.h b/numpy/_core/src/multiarray/multiarraymodule.h
@@ -1,6 +1,10 @@
 #ifndef NUMPY_CORE_SRC_MULTIARRAY_MULTIARRAYMODULE_H_
 #define NUMPY_CORE_SRC_MULTIARRAY_MULTIARRAYMODULE_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*
  * A struct storing thread-unsafe global state for the _multiarray_umath
  * module. We should refactor so the global state is thread-safe,
@@ -85,4 +89,8 @@ NPY_VISIBILITY_HIDDEN extern npy_thread_unsafe_state_struct npy_thread_unsafe_st
 NPY_NO_EXPORT int
 get_legacy_print_mode(void);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_MULTIARRAY_MULTIARRAYMODULE_H_ */
diff --git a/numpy/_core/src/multiarray/npy_buffer.h b/numpy/_core/src/multiarray/npy_buffer.h
@@ -1,6 +1,10 @@
 #ifndef NUMPY_CORE_SRC_MULTIARRAY_NPY_BUFFER_H_
 #define NUMPY_CORE_SRC_MULTIARRAY_NPY_BUFFER_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern NPY_NO_EXPORT PyBufferProcs array_as_buffer;
 
 NPY_NO_EXPORT int
@@ -12,4 +16,8 @@ _descriptor_from_pep3118_format(char const *s);
 NPY_NO_EXPORT int
 void_getbuffer(PyObject *obj, Py_buffer *view, int flags);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_MULTIARRAY_NPY_BUFFER_H_ */
diff --git a/numpy/_core/src/multiarray/number.h b/numpy/_core/src/multiarray/number.h
@@ -1,6 +1,10 @@
 #ifndef NUMPY_CORE_SRC_MULTIARRAY_NUMBER_H_
 #define NUMPY_CORE_SRC_MULTIARRAY_NUMBER_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct {
     PyObject *add;
     PyObject *subtract;
@@ -66,4 +70,8 @@ NPY_NO_EXPORT PyObject *
 PyArray_GenericAccumulateFunction(PyArrayObject *m1, PyObject *op, int axis,
                                   int rtype, PyArrayObject *out);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* NUMPY_CORE_SRC_MULTIARRAY_NUMBER_H_ */