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[libpng16] Fixed previous support for Z_PREFIX in configure builds, corrected

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sCAL APIs; some of these use floating point arithmetic so they need to be
disabled if floating point arithmetic is switched off.  This is a quiet API
change - previously it appeared that the APIs were supported if fixed point
arithmetic was used internally, however they required certain APIs (floor,
modf, frexp, atof) that are part of C floating point support. Changed
png_fixed and the gamma code specific version of the same to avoid floor(),
which may be a library function (not an intrinsic). Removed unused #if 0
code.
This commit is contained in:
John Bowler
2012-12-17 21:07:30 -06:00
committed by Glenn Randers-Pehrson
parent 9b99600c4d
commit fbbbc620b8
10 changed files with 81 additions and 382 deletions
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3
pngtest.c
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@@ -1169,7 +1169,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
#endif
#ifdef PNG_sCAL_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
#if defined PNG_FLOATING_POINT_SUPPORTED && \
defined PNG_FLOATING_ARITHMETIC_SUPPORTED
{
int unit;
double scal_width, scal_height;