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[libpng16] Mention in manual that 16-bit platform support has been dropped.

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This commit is contained in:
Glenn Randers-Pehrson
2015-08-16 23:32:04 -05:00
parent 751cee5ef1
commit b9ba8d6a57
6 changed files with 27 additions and 26 deletions
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10
png.c
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@@ -1512,10 +1512,10 @@ png_XYZ_normalize(png_XYZ *XYZ)
* safe.
*/
Y = XYZ->red_Y;
if (0x7fffffff - Y < XYZ->green_X)
if (0x7fffffffL - Y < XYZ->green_X)
return 1;
Y += XYZ->green_Y;
if (0x7fffffff - Y < XYZ->blue_X)
if (0x7fffffffL - Y < XYZ->blue_X)
return 1;
Y += XYZ->blue_Y;
@@ -3673,10 +3673,10 @@ for (i=11;i>=0;--i){ print i, " ", (1 - e(-(2^i)/65536*l(2))) * 2^(32-i), "\n"}
static png_uint_32
png_exp(png_fixed_point x)
{
if (x > 0 && x <= 0xfffff) /* Else overflow or zero (underflow) */
if (x > 0 && x <= 0xfffffUL) /* Else overflow or zero (underflow) */
{
/* Obtain a 4-bit approximation */
png_uint_32 e = png_32bit_exp[(x >> 12) & 0xf];
png_uint_32 e = png_32bit_exp[(x >> 12) & 0x0f];
/* Incorporate the low 12 bits - these decrease the returned value by
* multiplying by a number less than 1 if the bit is set. The multiplier
@@ -3729,7 +3729,7 @@ png_exp8bit(png_fixed_point lg2)
* step.
*/
x -= x >> 8;
return (png_byte)(((x + 0x7fffff) >> 24) & 0xff);
return (png_byte)(((x + 0x7fffffUL) >> 24) & 0xff);
}
#ifdef PNG_16BIT_SUPPORTED