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[libpng17] Use "if (value != 0)" instead of "if (value)" consistently.

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Glenn Randers-Pehrson
2014-03-08 13:25:55 -06:00
parent 88e7d62fbc
commit 4e61b58980
20 changed files with 159 additions and 149 deletions
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32
libpng.3
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@@ -1,4 +1,4 @@
.TH LIBPNG 3 "February 27, 2014"
.TH LIBPNG 3 "March 8, 2014"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0beta34
.SH SYNOPSIS
@@ -494,7 +494,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
.SH LIBPNG.TXT
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.7.0beta34 - February 27, 2014
libpng version 1.7.0beta34 - March 8, 2014
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2014 Glenn Randers-Pehrson
@@ -505,7 +505,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.7.0beta34 - February 27, 2014
libpng versions 0.97, January 1998, through 1.7.0beta34 - March 8, 2014
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2014 Glenn Randers-Pehrson
@@ -771,8 +771,8 @@ pngusr.dfa in these directories.
C. Configuration using PNG_USER_CONFIG
If \-DPNG_USER_CONFIG is added to the CPPFLAGS when pnglibconf.h is built the file
pngusr.h will automatically be included before the options in
If \-DPNG_USER_CONFIG is added to the CPPFLAGS when pnglibconf.h is built,
the file pngusr.h will automatically be included before the options in
scripts/pnglibconf.dfa are processed. Your pngusr.h file should contain only
macro definitions turning features on or off or setting settings.
@@ -922,7 +922,7 @@ an end_info structure.
If you would rather avoid the complexity of setjmp/longjmp issues,
you can compile libpng with PNG_NO_SETJMP, in which case
errors will result in a call to PNG_ABORT() which defaults to abort().
errors will result in a call to PNG_ABORT which defaults to abort().
You can #define PNG_ABORT to a function or other C code that does something
more useful than abort(), as long as your function does not
@@ -1654,7 +1654,7 @@ where row_pointers is an array of pointers to the pixel data for each row:
If you know your image size and pixel size ahead of time, you can allocate
row_pointers prior to calling png_read_png() with
if (height > PNG_UINT_32_MAX/(sizeof (png_byte))
if (height > PNG_UINT_32_MAX/(sizeof (png_byte)))
png_error (png_ptr,
"Image is too tall to process in memory");
@@ -3235,8 +3235,7 @@ you can compile libpng with PNG_NO_SETJMP, in which case
errors will result in a call to PNG_ABORT which defaults to abort().
You can #define PNG_ABORT to a function or other C code that does something
more useful than abort(), as long as your function does not
return.
more useful than abort(), as long as your function does not return.
Checking for invalid palette index on write was added at libpng
1.5.10. If a pixel contains an invalid (out-of-range) index libpng issues
@@ -5668,7 +5667,6 @@ The following API are now DEPRECATED:
png_info_init_3()
png_convert_to_rfc1123() which has been replaced
with png_convert_to_rfc1123_buffer()
png_data_freer()
png_malloc_default()
png_free_default()
png_reset_zstream()
@@ -5877,6 +5875,9 @@ exported functions are marked with PNGAPI:
body;
}
The return type and decorations are placed on a separate line
ahead of the function name, as illustrated above.
The prototypes for all exported functions appear in png.h,
above the comment that says
@@ -5933,6 +5934,9 @@ with an even number of lower-case hex digits (e.g., 0x00, 0xff, 0x0100).
We prefer to use underscores in variable names rather than camelCase, except
for a few type names that we inherit from zlib.h.
We prefer "if (something != 0)" and "if (something == 0)"
over "if (something)" and if "(!something)", respectively.
We do not use the TAB character for indentation in the C sources.
Lines do not exceed 80 characters.
@@ -5941,7 +5945,7 @@ Other rules can be inferred by inspecting the libpng source.
.SH XVII. Y2K Compliance in libpng
February 27, 2014
March 8, 2014
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
@@ -6211,7 +6215,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.7.0beta34 - February 27, 2014:
Libpng version 1.7.0beta34 - March 8, 2014:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@@ -6234,7 +6238,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.7.0beta34, February 27, 2014, are
libpng versions 1.2.6, August 15, 2004, through 1.7.0beta34, March 8, 2014, are
Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@@ -6333,7 +6337,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
February 27, 2014
March 8, 2014
.\" end of man page