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[libpng17] Improved the comments on some #ifdef lines.

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This commit is contained in:
Glenn Randers-Pehrson 2015-02-03 19:11:50 -06:00
parent 125eac0ee4
commit d7312be749
1 changed files with 10 additions and 9 deletions
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19
png.c
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@ -217,6 +217,7 @@ png_user_version_check(png_structrp png_ptr, png_const_charp user_png_ver)
/* Success return. */
return 1;
}
/* Generic function to create a png_struct for either read or write - this
* contains the common initialization.
*/
@ -693,13 +694,13 @@ png_get_copyright(png_const_structrp png_ptr)
#else
# ifdef __STDC__
return PNG_STRING_NEWLINE \
"libpng version 1.7.0beta48 - January 29, 2015" PNG_STRING_NEWLINE \
"libpng version 1.7.0beta48 - 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 1.7.0beta48 - January 29, 2015\
return "libpng version 1.7.0beta48 - 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.";
@ -2074,7 +2075,8 @@ 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
{
@ -2256,9 +2258,8 @@ 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)
@ -2272,7 +2273,7 @@ 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,
@ -2364,7 +2365,7 @@ 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 */
@ -3318,7 +3319,7 @@ png_gamma_significant(png_fixed_point gamma_val)
#endif
#ifdef PNG_READ_GAMMA_SUPPORTED
#ifndef PNG_FLOATING_ARITHMETIC_SUPPORTED
#if defined(PNG_16BIT_SUPPORTED) || !defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)
/* A local convenience routine. */
static png_fixed_point
png_product2(png_fixed_point a, png_fixed_point b)
@ -3340,7 +3341,7 @@ png_product2(png_fixed_point a, png_fixed_point b)
return 0; /* overflow */
}
#endif
#endif /* 16BIT || !FLOATING_ARITHMETIC */
/* The inverse of the above. */
png_fixed_point