Lines Matching defs:lg2
1875 unsigned int lg2 = 0;
1886 lg2 = 4, x <<= 4;
1889 lg2 += 2, x <<= 2;
1892 lg2 += 1, x <<= 1;
1895 return (png_int_32)((lg2 << 16) + ((png_8bit_l2[x-128]+32768)>>16));
1931 unsigned int lg2 = 0;
1938 lg2 = 8, x <<= 8;
1941 lg2 += 4, x <<= 4;
1944 lg2 += 2, x <<= 2;
1947 lg2 += 1, x <<= 1;
1952 lg2 <<= 28;
1953 lg2 += (png_8bit_l2[(x>>8)-128]+8) >> 4;
1964 * precision and that 'lg2' is current scaled by an extra 12 bits, so adjust
1970 lg2 += ((23591U * (65536U-x)) + (1U << (16+6-12-1))) >> (16+6-12);
1973 lg2 -= ((23499U * (x-65536U)) + (1U << (16+6-12-1))) >> (16+6-12);
1976 return (png_int_32)((lg2 + 2048) >> 12);
2071 png_exp8bit(png_fixed_point lg2)
2074 png_uint_32 x = png_exp(lg2);
2085 png_exp16bit(png_fixed_point lg2)
2088 png_uint_32 x = png_exp(lg2);
2105 png_int_32 lg2 = png_log8bit(value);
2108 if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1))
2128 png_int_32 lg2 = png_log16bit(value);
2131 if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1))