1mlib_ImageDivAlpha_Fp_Inp(3mMeLdIiBa)Lib Library Funcmtliiobn_sImageDivAlpha_Fp_Inp(3MLIB)
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6 mlib_ImageDivAlpha_Fp_Inp - alpha channel division, in place
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9 cc [ flag... ] file... -lmlib [ library... ]
10 #include <mlib.h>
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12 mlib_status mlib_ImageDivAlpha_Fp_Inp(mlib_image *srcdst, mlib_s32 cmask);
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16 The mlib_ImageDivAlpha_Fp_Inp() function divides floating-point color
17 channels by the alpha channel on a pixel-by-pixel basis, in place.
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20 It uses the following equation:
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22 srcdst[x][y][c] = srcdst[x][y][c] / srcdst[x][y][a]
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26 where c and a are the indices for the color channels and the alpha
27 channel, respectively, so c != a.
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30 The operation follows the IEEE-754 standard.
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33 The function takes the following arguments:
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35 srcdst Pointer to source and destination image.
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38 cmask Channel mask to indicate the alpha channel. Each bit of the
39 mask represents a channel in the image. The channel corre‐
40 sponding to the 1 bit of cmask is the alpha channel.
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44 The function returns MLIB_SUCCESS if successful. Otherwise it returns
45 MLIB_FAILURE.
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48 See attributes(5) for descriptions of the following attributes:
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53 ┌─────────────────────────────┬─────────────────────────────┐
54 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
55 ├─────────────────────────────┼─────────────────────────────┤
56 │Interface Stability │Committed │
57 ├─────────────────────────────┼─────────────────────────────┤
58 │MT-Level │MT-Safe │
59 └─────────────────────────────┴─────────────────────────────┘
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62 mlib_ImageDivAlpha(3MLIB), mlib_ImageDivAlpha_Fp(3MLIB), mlib_ImageDi‐
63 vAlpha_Inp(3MLIB), attributes(5)
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67SunOS 5.11 2 Mar 2007 mlib_ImageDivAlpha_Fp_Inp(3MLIB)