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[libpng16] Quieted (bogus?) clang warnings about "absolute value has no effect".

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Glenn Randers-Pehrson 2016-10-02 20:16:36 -05:00
parent f6497e03d1
commit 565a751ca2
1 changed files with 8 additions and 8 deletions
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16
pngwutil.c
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@ -2264,7 +2264,7 @@ png_setup_sub_row(png_structrp png_ptr, const png_uint_32 bpp,
{ {
v = *dp = *rp; v = *dp = *rp;
#ifdef PNG_USE_ABS #ifdef PNG_USE_ABS
sum += 128 - abs(v - 128); sum += 128 - abs((int)v - 128);
#else #else
sum += (v < 128) ? v : 256 - v; sum += (v < 128) ? v : 256 - v;
#endif #endif
@ -2275,7 +2275,7 @@ png_setup_sub_row(png_structrp png_ptr, const png_uint_32 bpp,
{ {
v = *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff); v = *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
#ifdef PNG_USE_ABS #ifdef PNG_USE_ABS
sum += 128 - abs(v - 128); sum += 128 - abs((int)v - 128);
#else #else
sum += (v < 128) ? v : 256 - v; sum += (v < 128) ? v : 256 - v;
#endif #endif
@ -2326,7 +2326,7 @@ png_setup_up_row(png_structrp png_ptr, const png_size_t row_bytes,
{ {
v = *dp = (png_byte)(((int)*rp - (int)*pp) & 0xff); v = *dp = (png_byte)(((int)*rp - (int)*pp) & 0xff);
#ifdef PNG_USE_ABS #ifdef PNG_USE_ABS
sum += 128 - abs(v - 128); sum += 128 - abs((int)v - 128);
#else #else
sum += (v < 128) ? v : 256 - v; sum += (v < 128) ? v : 256 - v;
#endif #endif
@ -2370,7 +2370,7 @@ png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp,
v = *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff); v = *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
#ifdef PNG_USE_ABS #ifdef PNG_USE_ABS
sum += 128 - abs(v - 128); sum += 128 - abs((int)v - 128);
#else #else
sum += (v < 128) ? v : 256 - v; sum += (v < 128) ? v : 256 - v;
#endif #endif
@ -2382,7 +2382,7 @@ png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp,
& 0xff); & 0xff);
#ifdef PNG_USE_ABS #ifdef PNG_USE_ABS
sum += 128 - abs(v - 128); sum += 128 - abs((int)v - 128);
#else #else
sum += (v < 128) ? v : 256 - v; sum += (v < 128) ? v : 256 - v;
#endif #endif
@ -2432,7 +2432,7 @@ png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp,
v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff); v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
#ifdef PNG_USE_ABS #ifdef PNG_USE_ABS
sum += 128 - abs(v - 128); sum += 128 - abs((int)v - 128);
#else #else
sum += (v < 128) ? v : 256 - v; sum += (v < 128) ? v : 256 - v;
#endif #endif
@ -2465,7 +2465,7 @@ png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp,
v = *dp++ = (png_byte)(((int)*rp++ - p) & 0xff); v = *dp++ = (png_byte)(((int)*rp++ - p) & 0xff);
#ifdef PNG_USE_ABS #ifdef PNG_USE_ABS
sum += 128 - abs(v - 128); sum += 128 - abs((int)v - 128);
#else #else
sum += (v < 128) ? v : 256 - v; sum += (v < 128) ? v : 256 - v;
#endif #endif
@ -2595,7 +2595,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
{ {
v = *rp; v = *rp;
#ifdef PNG_USE_ABS #ifdef PNG_USE_ABS
sum += 128 - abs(v - 128); sum += 128 - abs((int)v - 128);
#else #else
sum += (v < 128) ? v : 256 - v; sum += (v < 128) ? v : 256 - v;
#endif #endif