From 4d1f7af17b4b0966d5ed7fab215fc855fe459345 Mon Sep 17 00:00:00 2001
From: Werner Lemberg <wl@gnu.org>
Date: Mon, 23 Feb 2015 07:04:36 +0100
Subject: [PATCH] [smooth, raster] Re-enable standalone compilation.

* src/raster/ftraster.c (FT_RENDER_POOL_SIZE, FT_MAX)
[_STANDALONE_]: Define macros.

* src/smooth/ftgrays.c (FT_RENDER_POOL_SIZE, FT_MAX, FT_ABS,
FT_HYPOT) [_STANDALONE_]: Define macros.
---
 ChangeLog             | 10 ++++++++++
 src/raster/ftraster.c | 14 ++++++++++---
 src/smooth/ftgrays.c  | 46 ++++++++++++++++++++++++++++++++-----------
 3 files changed, 56 insertions(+), 14 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 17e4379f5..944459515 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2015-02-23  Werner Lemberg  <wl@gnu.org>
+
+	[smooth, raster] Re-enable standalone compilation.
+
+	* src/raster/ftraster.c (FT_RENDER_POOL_SIZE, FT_MAX)
+	[_STANDALONE_]: Define macros.
+
+	* src/smooth/ftgrays.c (FT_RENDER_POOL_SIZE, FT_MAX, FT_ABS,
+	FT_HYPOT) [_STANDALONE_]: Define macros.
+
 2015-02-22  Werner Lemberg  <wl@gnu.org>
 
 	[smooth] Signedness fixes.
diff --git a/src/raster/ftraster.c b/src/raster/ftraster.c
index 70fe4e735..317cd7db1 100644
--- a/src/raster/ftraster.c
+++ b/src/raster/ftraster.c
@@ -49,6 +49,10 @@
 
 #ifdef _STANDALONE_
 
+  /* The size in bytes of the render pool used by the scan-line converter  */
+  /* to do all of its work.                                                */
+#define FT_RENDER_POOL_SIZE  16384L
+
 #define FT_CONFIG_STANDARD_LIBRARY_H  <stdlib.h>
 
 #include <string.h>           /* for memset */
@@ -175,6 +179,8 @@
 #define FT_ERR_XCAT( x, y )  x ## y
 #define FT_ERR_CAT( x, y )   FT_ERR_XCAT( x, y )
 
+#define FT_MAX( a, b )  ( (a) > (b) ? (a) : (b) )
+
   /* This macro is used to indicate that a function parameter is unused. */
   /* Its purpose is simply to reduce compiler warnings.  Note also that  */
   /* simply defining it as `(void)x' doesn't avoid warnings with certain */
@@ -3131,14 +3137,16 @@
   }
 
 
-  FT_DEFINE_RASTER_FUNCS( ft_standard_raster,
+  FT_DEFINE_RASTER_FUNCS(
+    ft_standard_raster,
+
     FT_GLYPH_FORMAT_OUTLINE,
+
     (FT_Raster_New_Func)     ft_black_new,
     (FT_Raster_Reset_Func)   ft_black_reset,
     (FT_Raster_Set_Mode_Func)ft_black_set_mode,
     (FT_Raster_Render_Func)  ft_black_render,
-    (FT_Raster_Done_Func)    ft_black_done
-  )
+    (FT_Raster_Done_Func)    ft_black_done )
 
 
 /* END */
diff --git a/src/smooth/ftgrays.c b/src/smooth/ftgrays.c
index 2ac451a36..77b58f25f 100644
--- a/src/smooth/ftgrays.c
+++ b/src/smooth/ftgrays.c
@@ -94,6 +94,11 @@
 #ifdef _STANDALONE_
 
 
+  /* The size in bytes of the render pool used by the scan-line converter  */
+  /* to do all of its work.                                                */
+#define FT_RENDER_POOL_SIZE  16384L
+
+
   /* Auxiliary macros for token concatenation. */
 #define FT_ERR_XCAT( x, y )  x ## y
 #define FT_ERR_CAT( x, y )   FT_ERR_XCAT( x, y )
@@ -101,6 +106,21 @@
 #define FT_BEGIN_STMNT  do {
 #define FT_END_STMNT    } while ( 0 )
 
+#define FT_MAX( a, b )  ( (a) > (b) ? (a) : (b) )
+#define FT_ABS( a )     ( (a) < 0 ? -(a) : (a) )
+
+
+  /*
+   *  Approximate sqrt(x*x+y*y) using the `alpha max plus beta min'
+   *  algorithm.  We use alpha = 1, beta = 3/8, giving us results with a
+   *  largest error less than 7% compared to the exact value.
+   */
+#define FT_HYPOT( x, y )                 \
+          ( x = FT_ABS( x ),             \
+            y = FT_ABS( y ),             \
+            x > y ? x + ( 3 * y >> 3 )   \
+                  : y + ( 3 * x >> 3 ) )
+
 
   /* define this to dump debugging information */
 /* #define FT_DEBUG_LEVEL_TRACE */
@@ -1740,14 +1760,17 @@ typedef ptrdiff_t  FT_PtrDist;
 
   } gray_TBand;
 
-    FT_DEFINE_OUTLINE_FUNCS(func_interface,
-      (FT_Outline_MoveTo_Func) gray_move_to,
-      (FT_Outline_LineTo_Func) gray_line_to,
-      (FT_Outline_ConicTo_Func)gray_conic_to,
-      (FT_Outline_CubicTo_Func)gray_cubic_to,
-      0,
-      0
-    )
+
+  FT_DEFINE_OUTLINE_FUNCS(
+    func_interface,
+
+    (FT_Outline_MoveTo_Func) gray_move_to,
+    (FT_Outline_LineTo_Func) gray_line_to,
+    (FT_Outline_ConicTo_Func)gray_conic_to,
+    (FT_Outline_CubicTo_Func)gray_cubic_to,
+    0,
+    0 )
+
 
   static int
   gray_convert_glyph_inner( RAS_ARG )
@@ -2090,15 +2113,16 @@ typedef ptrdiff_t  FT_PtrDist;
   }
 
 
-  FT_DEFINE_RASTER_FUNCS(ft_grays_raster,
+  FT_DEFINE_RASTER_FUNCS(
+    ft_grays_raster,
+
     FT_GLYPH_FORMAT_OUTLINE,
 
     (FT_Raster_New_Func)     gray_raster_new,
     (FT_Raster_Reset_Func)   gray_raster_reset,
     (FT_Raster_Set_Mode_Func)gray_raster_set_mode,
     (FT_Raster_Render_Func)  gray_raster_render,
-    (FT_Raster_Done_Func)    gray_raster_done
-  )
+    (FT_Raster_Done_Func)    gray_raster_done )
 
 
 /* END */