diff options
Diffstat (limited to 'audio/zinf/files/patch-zlib-inffast.c')
| -rw-r--r-- | audio/zinf/files/patch-zlib-inffast.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/audio/zinf/files/patch-zlib-inffast.c b/audio/zinf/files/patch-zlib-inffast.c new file mode 100644 index 000000000000..59c283dd0e5b --- /dev/null +++ b/audio/zinf/files/patch-zlib-inffast.c @@ -0,0 +1,67 @@ +--- lib/zlib/src/inffast.c.orig Thu Jun 20 08:40:24 2002 ++++ lib/zlib/src/inffast.c Sun Aug 4 17:16:50 2002 +@@ -1,5 +1,5 @@ + /* inffast.c -- process literals and length/distance pairs fast +- * Copyright (C) 1995-1998 Mark Adler ++ * Copyright (C) 1995-2002 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +@@ -93,28 +93,41 @@ + + /* do the copy */ + m -= c; +- if ((uInt)(q - s->window) >= d) /* offset before dest */ +- { /* just copy */ +- r = q - d; +- *q++ = *r++; c--; /* minimum count is three, */ +- *q++ = *r++; c--; /* so unroll loop a little */ +- } +- else /* else offset after destination */ ++ r = q - d; ++ if (r < s->window) /* wrap if needed */ + { +- e = d - (uInt)(q - s->window); /* bytes from offset to end */ +- r = s->end - e; /* pointer to offset */ +- if (c > e) /* if source crosses, */ ++ do { ++ r += s->end - s->window; /* force pointer in window */ ++ } while (r < s->window); /* covers invalid distances */ ++ e = s->end - r; ++ if (c > e) + { +- c -= e; /* copy to end of window */ ++ c -= e; /* wrapped copy */ + do { +- *q++ = *r++; ++ *q++ = *r++; + } while (--e); +- r = s->window; /* copy rest from start of window */ ++ r = s->window; ++ do { ++ *q++ = *r++; ++ } while (--c); + } ++ else /* normal copy */ ++ { ++ *q++ = *r++; c--; ++ *q++ = *r++; c--; ++ do { ++ *q++ = *r++; ++ } while (--c); ++ } ++ } ++ else /* normal copy */ ++ { ++ *q++ = *r++; c--; ++ *q++ = *r++; c--; ++ do { ++ *q++ = *r++; ++ } while (--c); + } +- do { /* copy all or what's left */ +- *q++ = *r++; +- } while (--c); + break; + } + else if ((e & 64) == 0) |