Update libjpeg_turbo to 1.4.90 from https://github.com/libjpeg-turbo/

jfdctfst.c

Index: jfdctfst.c
diff --git a/jfdctfst.c b/jfdctfst.c
index ccb378a3b45339e05167514a038cc2db616e8fe7..82b2515a272a09313a772d4f69a2e240c66b1506 100644
--- a/jfdctfst.c
+++ b/jfdctfst.c
@@ -1,9 +1,12 @@
 /*
  * jfdctfst.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1996, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
- * For conditions of distribution and use, see the accompanying README file.
+ * libjpeg-turbo Modifications:
+ * Copyright (C) 2015, D. R. Commander
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
  *
  * This file contains a fast, not so accurate integer implementation of the
  * forward DCT (Discrete Cosine Transform).
@@ -15,8 +18,8 @@
  * This implementation is based on Arai, Agui, and Nakajima's algorithm for
  * scaled DCT.  Their original paper (Trans. IEICE E-71(11):1095) is in
  * Japanese, but the algorithm is described in the Pennebaker & Mitchell
- * JPEG textbook (see REFERENCES section in file README).  The following code
- * is based directly on figure 4-8 in P&M.
+ * JPEG textbook (see REFERENCES section in file README.ijg).  The following
+ * code is based directly on figure 4-8 in P&M.
  * While an 8-point DCT cannot be done in less than 11 multiplies, it is
  * possible to arrange the computation so that many of the multiplies are
  * simple scalings of the final outputs.  These multiplies can then be
@@ -33,7 +36,7 @@
 #define JPEG_INTERNALS
 #include "jinclude.h"
 #include "jpeglib.h"
-#include "jdct.h"		/* Private declarations for DCT subsystem */
+#include "jdct.h"               /* Private declarations for DCT subsystem */
 
 #ifdef DCT_IFAST_SUPPORTED
 
@@ -76,10 +79,10 @@
  */
 
 #if CONST_BITS == 8
-#define FIX_0_382683433  ((INT32)   98)		/* FIX(0.382683433) */
-#define FIX_0_541196100  ((INT32)  139)		/* FIX(0.541196100) */
-#define FIX_0_707106781  ((INT32)  181)		/* FIX(0.707106781) */
-#define FIX_1_306562965  ((INT32)  334)		/* FIX(1.306562965) */
+#define FIX_0_382683433  ((JLONG)   98)         /* FIX(0.382683433) */
+#define FIX_0_541196100  ((JLONG)  139)         /* FIX(0.541196100) */
+#define FIX_0_707106781  ((JLONG)  181)         /* FIX(0.707106781) */
+#define FIX_1_306562965  ((JLONG)  334)         /* FIX(1.306562965) */
 #else
 #define FIX_0_382683433  FIX(0.382683433)
 #define FIX_0_541196100  FIX(0.541196100)
@@ -99,7 +102,7 @@
 #endif
 
 
-/* Multiply a DCTELEM variable by an INT32 constant, and immediately
+/* Multiply a DCTELEM variable by an JLONG constant, and immediately
  * descale to yield a DCTELEM result.
  */
 
@@ -111,7 +114,7 @@
  */
 
 GLOBAL(void)
-jpeg_fdct_ifast (DCTELEM * data)
+jpeg_fdct_ifast (DCTELEM *data)
 {
   DCTELEM tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
   DCTELEM tmp10, tmp11, tmp12, tmp13;
@@ -132,24 +135,24 @@ jpeg_fdct_ifast (DCTELEM * data)
     tmp5 = dataptr[2] - dataptr[5];
     tmp3 = dataptr[3] + dataptr[4];
     tmp4 = dataptr[3] - dataptr[4];
-    
+
     /* Even part */
-    
-    tmp10 = tmp0 + tmp3;	/* phase 2 */
+
+    tmp10 = tmp0 + tmp3;        /* phase 2 */
     tmp13 = tmp0 - tmp3;
     tmp11 = tmp1 + tmp2;
     tmp12 = tmp1 - tmp2;
-    
+
     dataptr[0] = tmp10 + tmp11; /* phase 3 */
     dataptr[4] = tmp10 - tmp11;
-    
+
     z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); /* c4 */
-    dataptr[2] = tmp13 + z1;	/* phase 5 */
+    dataptr[2] = tmp13 + z1;    /* phase 5 */
     dataptr[6] = tmp13 - z1;
-    
+
     /* Odd part */
 
-    tmp10 = tmp4 + tmp5;	/* phase 2 */
+    tmp10 = tmp4 + tmp5;        /* phase 2 */
     tmp11 = tmp5 + tmp6;
     tmp12 = tmp6 + tmp7;
 
@@ -159,15 +162,15 @@ jpeg_fdct_ifast (DCTELEM * data)
     z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */
     z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */
 
-    z11 = tmp7 + z3;		/* phase 5 */
+    z11 = tmp7 + z3;            /* phase 5 */
     z13 = tmp7 - z3;
 
-    dataptr[5] = z13 + z2;	/* phase 6 */
+    dataptr[5] = z13 + z2;      /* phase 6 */
     dataptr[3] = z13 - z2;
     dataptr[1] = z11 + z4;
     dataptr[7] = z11 - z4;
 
-    dataptr += DCTSIZE;		/* advance pointer to next row */
+    dataptr += DCTSIZE;         /* advance pointer to next row */
   }
 
   /* Pass 2: process columns. */
@@ -182,24 +185,24 @@ jpeg_fdct_ifast (DCTELEM * data)
     tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5];
     tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4];
     tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4];
-    
+
     /* Even part */
-    
-    tmp10 = tmp0 + tmp3;	/* phase 2 */
+
+    tmp10 = tmp0 + tmp3;        /* phase 2 */
     tmp13 = tmp0 - tmp3;
     tmp11 = tmp1 + tmp2;
     tmp12 = tmp1 - tmp2;
-    
+
     dataptr[DCTSIZE*0] = tmp10 + tmp11; /* phase 3 */
     dataptr[DCTSIZE*4] = tmp10 - tmp11;
-    
+
     z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); /* c4 */
     dataptr[DCTSIZE*2] = tmp13 + z1; /* phase 5 */
     dataptr[DCTSIZE*6] = tmp13 - z1;
-    
+
     /* Odd part */
 
-    tmp10 = tmp4 + tmp5;	/* phase 2 */
+    tmp10 = tmp4 + tmp5;        /* phase 2 */
     tmp11 = tmp5 + tmp6;
     tmp12 = tmp6 + tmp7;
 
@@ -209,7 +212,7 @@ jpeg_fdct_ifast (DCTELEM * data)
     z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */
     z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */
 
-    z11 = tmp7 + z3;		/* phase 5 */
+    z11 = tmp7 + z3;            /* phase 5 */
     z13 = tmp7 - z3;
 
     dataptr[DCTSIZE*5] = z13 + z2; /* phase 6 */
@@ -217,7 +220,7 @@ jpeg_fdct_ifast (DCTELEM * data)
     dataptr[DCTSIZE*1] = z11 + z4;
     dataptr[DCTSIZE*7] = z11 - z4;
 
-    dataptr++;			/* advance pointer to next column */
+    dataptr++;                  /* advance pointer to next column */
   }
 }