From 268c7bf68b3908fcad4496543b07e88d1b49a7cb Mon Sep 17 00:00:00 2001 From: Glenn Randers-Pehrson Date: Mon, 17 Aug 2015 12:40:19 -0500 Subject: [libpng16] Use unsigned hex constants in "reciprocal" computations --- pngwrite.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'pngwrite.c') diff --git a/pngwrite.c b/pngwrite.c index c3374b189..9d2d54afb 100644 --- a/pngwrite.c +++ b/pngwrite.c @@ -1570,7 +1570,7 @@ png_write_image_16bit(png_voidp argument) * is only initialized when required. */ if (alpha > 0 && alpha < 65535) - reciprocal = ((0xffffUL<<15)+(alpha>>1))/alpha; + reciprocal = ((0xffffU<<15)+(alpha>>1))/alpha; c = channels; do /* always at least one channel */ @@ -1621,7 +1621,7 @@ png_write_image_16bit(png_voidp argument) * calculation can be done to 15 bits of accuracy; however, the output needs to * be scaled in the range 0..255*65535, so include that scaling here. */ -# define UNP_RECIPROCAL(alpha) ((((0xffffUL*0xffU)<<7)+(alpha>>1))/alpha) +# define UNP_RECIPROCAL(alpha) ((((0xffffU*0xffU)<<7)+(alpha>>1))/alpha) static png_byte png_unpremultiply(png_uint_32 component, png_uint_32 alpha, @@ -1836,7 +1836,7 @@ png_image_set_PLTE(png_image_write_control *display) * divided by 128 (i.e. asr 7). */ if (alphabyte > 0 && alphabyte < 255) - reciprocal = (((0xffffUL*0xffU)<<7)+(alpha>>1))/alpha; + reciprocal = (((0xffffU*0xffU)<<7)+(alpha>>1))/alpha; tRNS[i] = alphabyte; if (alphabyte < 255) -- cgit v1.2.1