From 8f0e2729dd3d3cd65d9cd26bbd2c30e3f3a5446b Mon Sep 17 00:00:00 2001 From: Glenn Randers-Pehrson Date: Tue, 3 Feb 2015 19:10:03 -0600 Subject: [PATCH] [libpng16] Improved comments on some #ifdef lines. --- png.c | 24 +++++++++++------------- 1 file changed, 11 insertions(+), 13 deletions(-) diff --git a/png.c b/png.c index 4a5c6c8ff..975b32d09 100644 --- a/png.c +++ b/png.c @@ -772,13 +772,13 @@ png_get_copyright(png_const_structrp png_ptr) #else # ifdef __STDC__ return PNG_STRING_NEWLINE \ - "libpng version 1.6.17beta02 - January 29, 2015" PNG_STRING_NEWLINE \ + "libpng version 1.6.17beta02 - February 4, 2015" PNG_STRING_NEWLINE \ "Copyright (c) 1998-2015 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \ "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \ "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \ PNG_STRING_NEWLINE; # else - return "libpng version 1.6.17beta02 - January 29, 2015\ + return "libpng version 1.6.17beta02 - February 4, 2015\ Copyright (c) 1998-2015 Glenn Randers-Pehrson\ Copyright (c) 1996-1997 Andreas Dilger\ Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc."; @@ -950,8 +950,6 @@ png_access_version_number(void) return((png_uint_32)PNG_LIBPNG_VER); } - - #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) /* Ensure that png_ptr->zstream.msg holds some appropriate error message string. * If it doesn't 'ret' is used to set it to something appropriate, even in cases @@ -1184,7 +1182,7 @@ png_colorspace_sync(png_const_structrp png_ptr, png_inforp info_ptr) png_colorspace_sync_info(png_ptr, info_ptr); } #endif -#endif +#endif /* GAMMA */ #ifdef PNG_COLORSPACE_SUPPORTED /* Added at libpng-1.5.5 to support read and write of true CIEXYZ values for @@ -2169,7 +2167,8 @@ png_icc_check_tag_table(png_const_structrp png_ptr, png_colorspacerp colorspace, return 1; /* success, maybe with warnings */ } -#if defined(PNG_sRGB_SUPPORTED) && PNG_sRGB_PROFILE_CHECKS >= 0 +#ifdef PNG_sRGB_SUPPORTED +#if PNG_sRGB_PROFILE_CHECKS >= 0 /* Information about the known ICC sRGB profiles */ static const struct { @@ -2352,9 +2351,8 @@ png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr, return 0; /* no match */ } -#endif +#endif /* PNG_sRGB_PROFILE_CHECKS >= 0 */ -#ifdef PNG_sRGB_SUPPORTED void /* PRIVATE */ png_icc_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace, png_const_bytep profile, uLong adler) @@ -2368,7 +2366,7 @@ png_icc_set_sRGB(png_const_structrp png_ptr, (void)png_colorspace_set_sRGB(png_ptr, colorspace, (int)/*already checked*/png_get_uint_32(profile+64)); } -#endif /* READ_sRGB */ +#endif /* sRGB */ int /* PRIVATE */ png_colorspace_set_ICC(png_const_structrp png_ptr, png_colorspacerp colorspace, @@ -2460,7 +2458,7 @@ png_colorspace_set_rgb_coefficients(png_structrp png_ptr) png_error(png_ptr, "internal error handling cHRM->XYZ"); } } -#endif +#endif /* READ_RGB_TO_GRAY */ #endif /* COLORSPACE */ @@ -3412,19 +3410,19 @@ static png_fixed_point png_product2(png_fixed_point a, png_fixed_point b) { /* The required result is 1/a * 1/b; the following preserves accuracy. */ -# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED +#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED double r = a * 1E-5; r *= b; r = floor(r+.5); if (r <= 2147483647. && r >= -2147483648.) return (png_fixed_point)r; -# else +#else png_fixed_point res; if (png_muldiv(&res, a, b, 100000) != 0) return res; -# endif +#endif return 0; /* overflow */ }