1 files changed, 23 insertions, 0 deletions
diff --git a/py/pfenv.h b/py/pfenv.h
new file mode 100644
index 0000000000..edceaf3e4e
--- /dev/null
+++ b/py/pfenv.h
@@ -0,0 +1,23 @@
+#define PF_FLAG_LEFT_ADJUST     (0x001)
+#define PF_FLAG_SHOW_SIGN       (0x002)
+#define PF_FLAG_SPACE_SIGN      (0x004)
+#define PF_FLAG_NO_TRAILZ       (0x008)
+#define PF_FLAG_SHOW_PREFIX     (0x010)
+#define PF_FLAG_SHOW_COMMA      (0x020)
+#define PF_FLAG_PAD_AFTER_SIGN  (0x040)
+#define PF_FLAG_CENTER_ADJUST   (0x080)
+#define PF_FLAG_ADD_PERCENT     (0x100)
+#define PF_FLAG_PAD_NAN_INF     (0x200)
+
+typedef struct _pfenv_t {
+    void *data;
+    void (*print_strn)(void *, const char *str, unsigned int len);
+} pfenv_t;
+
+void pfenv_vstr_add_strn(void *data, const char *str, unsigned int len);
+
+int pfenv_print_strn(const pfenv_t *pfenv, const char *str, unsigned int len, int flags, char fill, int width);
+int pfenv_print_int(const pfenv_t *pfenv, unsigned int x, int sgn, int base, int base_char, int flags, char fill, int width);
+#if MICROPY_ENABLE_FLOAT
+int pfenv_print_float(const pfenv_t *pfenv, mp_float_t f, char fmt, int flags, char fill, int width, int prec);
+#endif