Glyph positions maintain 32 bit integer part.

src/core/SkPaint.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPaint.h"
 #include "SkAnnotation.h"
 #include "SkAutoKern.h"
@@ skipping 786 matching lines @@
     SkTLazy<SkPaint> fLazy;
 };
 
 static void set_bounds(const SkGlyph& g, SkRect* bounds) {
     bounds->set(SkIntToScalar(g.fLeft),
                 SkIntToScalar(g.fTop),
                 SkIntToScalar(g.fLeft + g.fWidth),
                 SkIntToScalar(g.fTop + g.fHeight));
 }
 
-// 64bits wide, with a 16bit bias. Useful when accumulating lots of 16.16 so
-// we don't overflow along the way
-typedef int64_t Sk48Dot16;
-
-static inline float Sk48Dot16ToScalar(Sk48Dot16 x) {
-    return (float) (x * 1.5258789e-5);   // x * (1 / 65536.0f)
-}
-
 static void join_bounds_x(const SkGlyph& g, SkRect* bounds, Sk48Dot16 dx) {
     SkScalar sx = Sk48Dot16ToScalar(dx);
     bounds->join(SkIntToScalar(g.fLeft) + sx,
                  SkIntToScalar(g.fTop),
                  SkIntToScalar(g.fLeft + g.fWidth) + sx,
                  SkIntToScalar(g.fTop + g.fHeight));
 }
 
 static void join_bounds_y(const SkGlyph& g, SkRect* bounds, Sk48Dot16 dy) {
     SkScalar sy = Sk48Dot16ToScalar(dy);
@@ skipping 1559 matching lines @@
 }
 
 uint32_t SkPaint::getHash() const {
     // We're going to hash 10 pointers and 7 32-bit values, finishing up with fBitfields,
     // so fBitfields should be 10 pointers and 6 32-bit values from the start.
     SK_COMPILE_ASSERT(offsetof(SkPaint, fBitfields) == 10 * sizeof(void*) + 6 * sizeof(uint32_t),
                       SkPaint_notPackedTightly);
     return SkChecksum::Murmur3(reinterpret_cast<const uint32_t*>(this),
                                offsetof(SkPaint, fBitfields) + sizeof(fBitfields));
 }