Lines Matching refs:bit
12 # Shell script to generate png.c 8-bit and 16-bit log tables (see the code in
15 # This script uses the "bc" arbitrary precision calculator to calculate 32-bit
16 # fixed point values of logarithms appropriate to finding the log of an 8-bit
51 /* 8-bit log table: png_8bit_l2[128]
53 * 255, so it's the base 2 logarithm of a normalized 8-bit floating point
54 * mantissa. The numbers are 32-bit fractions.
70 /* The 'exp()' case must invert the above, taking a 20-bit fixed point
71 * logarithmic value and returning a 16 or 8-bit number as appropriate. In
75 * The worst case is the 16-bit distinction between 65535 and 65534; this
81 * frational part of the logarithm by using an accurate 32-bit value from the
