path: root/README
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authorSzabolcs Nagy <>2015-02-09 21:38:02 +0100
committerSzabolcs Nagy <>2015-02-09 21:38:02 +0100
commitf3f29795da461905a5e9f0314dc0d7840bd75c3f (patch)
tree0a7e8514811de827f031671f5347fbf5609c6930 /README
parent018f9df4440e1d5640f9d50dc08bee9bbc40b3b6 (diff)
add IEEE binary128 long double support to floatscan
just defining the necessary constants: LD_B1B_MAX is 2^113 - 1 in base 10^9 KMAX is 2048 so the x array can hold up to 18432 decimal digits (the worst case is converting 2^-16495 = 5^16495 * 10^-16495 to binary, it requires the processing of int(log10(5)*16495)+1 = 11530 decimal digits after discarding the leading zeros, the conversion requires some headroom in x, but KMAX is more than enough for that) However this code is not optimal on archs with IEEE binary128 long double because the arithmetics is software emulated (on all such platforms as far as i know) which means big and slow strtod.
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