X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=support%2Finffast.c;h=2f1d60b43b8a9deacf22bb5526a979dcc219a68f;hb=557c65a64b6c108f4c42bbabf00f7f2d07b2c2b7;hp=0b919bb43ee423b5768ca59c59e5c74928e2701d;hpb=5dd3f99e04bc79b4748c45ec075fb72f2197bf25;p=mono.git

diff --git a/support/inffast.c b/support/inffast.c
index 0b919bb43ee..2f1d60b43b8 100644
--- a/support/inffast.c
+++ b/support/inffast.c
@@ -1,5 +1,5 @@
 /* inffast.c -- fast decoding
- * Copyright (C) 1995-2006 Mark Adler
+ * Copyright (C) 1995-2008, 2010 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -64,7 +64,7 @@
       requires strm->avail_out >= 258 for each loop to avoid checking for
       output space.
  */
-void inflate_fast(strm, start)
+void ZLIB_INTERNAL inflate_fast(strm, start)
 z_streamp strm;
 unsigned start;         /* inflate()'s starting value for strm->avail_out */
 {
@@ -79,7 +79,7 @@ unsigned start;         /* inflate()'s starting value for strm->avail_out */
 #endif
     unsigned wsize;             /* window size or zero if not using window */
     unsigned whave;             /* valid bytes in the window */
-    unsigned write;             /* window write index */
+    unsigned wnext;             /* window write index */
     unsigned char FAR *window;  /* allocated sliding window, if wsize != 0 */
     unsigned long hold;         /* local strm->hold */
     unsigned bits;              /* local strm->bits */
@@ -106,7 +106,7 @@ unsigned start;         /* inflate()'s starting value for strm->avail_out */
 #endif
     wsize = state->wsize;
     whave = state->whave;
-    write = state->write;
+    wnext = state->wnext;
     window = state->window;
     hold = state->hold;
     bits = state->bits;
@@ -188,7 +188,8 @@ unsigned start;         /* inflate()'s starting value for strm->avail_out */
                     op = dist - op;             /* distance back in window */
                     if (op > whave) {
                         if (state->sane) {
-                            strm->msg = (char *)"invalid distance too far back";
+                            strm->msg =
+                                (char *)"invalid distance too far back";
                             state->mode = BAD;
                             break;
                         }
@@ -213,7 +214,7 @@ unsigned start;         /* inflate()'s starting value for strm->avail_out */
 #endif
                     }
                     from = window - OFF;
-                    if (write == 0) {           /* very common case */
+                    if (wnext == 0) {           /* very common case */
                         from += wsize - op;
                         if (op < len) {         /* some from window */
                             len -= op;
@@ -223,17 +224,17 @@ unsigned start;         /* inflate()'s starting value for strm->avail_out */
                             from = out - dist;  /* rest from output */
                         }
                     }
-                    else if (write < op) {      /* wrap around window */
-                        from += wsize + write - op;
-                        op -= write;
+                    else if (wnext < op) {      /* wrap around window */
+                        from += wsize + wnext - op;
+                        op -= wnext;
                         if (op < len) {         /* some from end of window */
                             len -= op;
                             do {
                                 PUP(out) = PUP(from);
                             } while (--op);
                             from = window - OFF;
-                            if (write < len) {  /* some from start of window */
-                                op = write;
+                            if (wnext < len) {  /* some from start of window */
+                                op = wnext;
                                 len -= op;
                                 do {
                                     PUP(out) = PUP(from);
@@ -243,7 +244,7 @@ unsigned start;         /* inflate()'s starting value for strm->avail_out */
                         }
                     }
                     else {                      /* contiguous in window */
-                        from += write - op;
+                        from += wnext - op;
                         if (op < len) {         /* some from window */
                             len -= op;
                             do {
@@ -326,7 +327,7 @@ unsigned start;         /* inflate()'s starting value for strm->avail_out */
    inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
    - Using bit fields for code structure
    - Different op definition to avoid & for extra bits (do & for table bits)
-   - Three separate decoding do-loops for direct, window, and write == 0
+   - Three separate decoding do-loops for direct, window, and wnext == 0
    - Special case for distance > 1 copies to do overlapped load and store copy
    - Explicit branch predictions (based on measured branch probabilities)
    - Deferring match copy and interspersed it with decoding subsequent codes