Fix more double-promotion errors

WHy do only some of the clang bots catch this I have no idea :(.

src/hb-aat-layout-trak-table.hh

@@ -133,8 +133,8 @@ struct TrackData
       if (size_table[size_index].to_float () >= csspx)
         break;
 
-    return round (interpolate_at (size_index ? size_index - 1 : 0, csspx,
+    return roundf (interpolate_at (size_index ? size_index - 1 : 0, csspx,
-				  *trackTableEntry, base));
+				   *trackTableEntry, base));
   }
 
   bool sanitize (hb_sanitize_context_t *c, const void *base) const

src/hb-font.hh

@@ -607,7 +607,7 @@ struct hb_font_t
     return (hb_position_t) (scaled / upem);
   }
   hb_position_t em_scalef (float v, int scale)
-  { return (hb_position_t) round (v * scale / face->get_upem ()); }
+  { return (hb_position_t) roundf (v * scale / face->get_upem ()); }
   float em_fscale (int16_t v, int scale)
   { return (float) v * scale / face->get_upem (); }
 };

src/hb-open-type.hh

@@ -110,7 +110,7 @@ struct F2DOT14 : HBINT16
   F2DOT14& operator = (uint16_t i ) { HBINT16::operator= (i); return *this; }
   // 16384 means 1<<14
   float to_float () const  { return ((int32_t) v) / 16384.f; }
-  void set_float (float f) { v = round (f * 16384.f); }
+  void set_float (float f) { v = roundf (f * 16384.f); }
   public:
   DEFINE_SIZE_STATIC (2);
 };
@@ -121,7 +121,7 @@ struct Fixed : HBINT32
   Fixed& operator = (uint32_t i) { HBINT32::operator= (i); return *this; }
   // 65536 means 1<<16
   float to_float () const  { return ((int32_t) v) / 65536.f; }
-  void set_float (float f) { v = round (f * 65536.f); }
+  void set_float (float f) { v = roundf (f * 65536.f); }
   public:
   DEFINE_SIZE_STATIC (4);
 };

src/hb-ot-color-cbdt-table.hh

@@ -442,12 +442,12 @@ struct CBDT
       }
 
       /* Convert to font units. */
-      double x_scale = upem / (double) strike.ppemX;
+      float x_scale = upem / (float) strike.ppemX;
-      double y_scale = upem / (double) strike.ppemY;
+      float y_scale = upem / (float) strike.ppemY;
-      extents->x_bearing = round (extents->x_bearing * x_scale);
+      extents->x_bearing = roundf (extents->x_bearing * x_scale);
-      extents->y_bearing = round (extents->y_bearing * y_scale);
+      extents->y_bearing = roundf (extents->y_bearing * y_scale);
-      extents->width = round (extents->width * x_scale);
+      extents->width = roundf (extents->width * x_scale);
-      extents->height = round (extents->height * y_scale);
+      extents->height = roundf (extents->height * y_scale);
 
       return true;
     }

src/hb-ot-color-sbix-table.hh

@@ -242,11 +242,11 @@ struct sbix
       /* Convert to font units. */
       if (strike_ppem)
       {
-	double scale = font->face->get_upem () / (double) strike_ppem;
+	float scale = font->face->get_upem () / (float) strike_ppem;
-	extents->x_bearing = round (extents->x_bearing * scale);
+	extents->x_bearing = roundf (extents->x_bearing * scale);
-	extents->y_bearing = round (extents->y_bearing * scale);
+	extents->y_bearing = roundf (extents->y_bearing * scale);
-	extents->width = round (extents->width * scale);
+	extents->width = roundf (extents->width * scale);
-	extents->height = round (extents->height * scale);
+	extents->height = roundf (extents->height * scale);
       }
 
       hb_blob_destroy (blob);

src/hb-ot-layout-gpos-table.hh

@@ -446,8 +446,8 @@ struct MarkArray : ArrayOf<MarkRecord>	/* Array of MarkRecords--in Coverage orde
     glyph_anchor.get_anchor (c, buffer->info[glyph_pos].codepoint, &base_x, &base_y);
 
     hb_glyph_position_t &o = buffer->cur_pos();
-    o.x_offset = round (base_x - mark_x);
+    o.x_offset = roundf (base_x - mark_x);
-    o.y_offset = round (base_y - mark_y);
+    o.y_offset = roundf (base_y - mark_y);
     o.attach_type() = ATTACH_TYPE_MARK;
     o.attach_chain() = (int) glyph_pos - (int) buffer->idx;
     buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT;
@@ -993,32 +993,32 @@ struct CursivePosFormat1
     /* Main-direction adjustment */
     switch (c->direction) {
       case HB_DIRECTION_LTR:
-	pos[i].x_advance  = round (exit_x) + pos[i].x_offset;
+	pos[i].x_advance  = roundf (exit_x) + pos[i].x_offset;
 
-	d = round (entry_x) + pos[j].x_offset;
+	d = roundf (entry_x) + pos[j].x_offset;
 	pos[j].x_advance -= d;
 	pos[j].x_offset  -= d;
 	break;
       case HB_DIRECTION_RTL:
-	d = round (exit_x) + pos[i].x_offset;
+	d = roundf (exit_x) + pos[i].x_offset;
 	pos[i].x_advance -= d;
 	pos[i].x_offset  -= d;
 
-	pos[j].x_advance  = round (entry_x) + pos[j].x_offset;
+	pos[j].x_advance  = roundf (entry_x) + pos[j].x_offset;
 	break;
       case HB_DIRECTION_TTB:
-	pos[i].y_advance  = round (exit_y) + pos[i].y_offset;
+	pos[i].y_advance  = roundf (exit_y) + pos[i].y_offset;
 
-	d = round (entry_y) + pos[j].y_offset;
+	d = roundf (entry_y) + pos[j].y_offset;
 	pos[j].y_advance -= d;
 	pos[j].y_offset  -= d;
 	break;
       case HB_DIRECTION_BTT:
-	d = round (exit_y) + pos[i].y_offset;
+	d = roundf (exit_y) + pos[i].y_offset;
 	pos[i].y_advance -= d;
 	pos[i].y_offset  -= d;
 
-	pos[j].y_advance  = round (entry_y);
+	pos[j].y_advance  = roundf (entry_y);
 	break;
       case HB_DIRECTION_INVALID:
       default: