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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-var.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-var.cc b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-var.cc
index 6b42b45cd96..0376e26b4aa 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-var.cc
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-var.cc
@@ -303,6 +303,9 @@ hb_ot_var_normalize_variations (hb_face_t *face,
* values for the axis are mapped to the interval [-1,1], with the default
* axis value mapped to 0.
*
+ * The normalized values have 14 bits of fixed-point sub-integer precision as per
+ * OpenType specification.
+ *
* Any additional scaling defined in the face's `avar` table is also
* applied, as described at https://docs.microsoft.com/en-us/typography/opentype/spec/avar
*