Mercurial > dropbear
view libtommath/bn_mp_cnt_lsb.c @ 1227:5dde22e8a189
scp: Have `fatal()' append a newline to the message
Date: Wed, 4 Nov 2015 20:33:19 -0000
It would seem that it's standard practice not to include a newline in the message
text, but that results in poor formatting, as a shell's command line then begins
on the line of the error message itself.
This commit simply instructs `fatal()' to append a newline after the message,
which should be suitable behavior for all of the invocations I've come across.
| author | Michael Witten <mfwitten@gmail.com> |
|---|---|
| date | Tue, 19 Jan 2016 00:23:19 +0800 |
| parents | 5ff8218bcee9 |
| children | 60fc6476e044 |
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#include <tommath.h> #ifdef BN_MP_CNT_LSB_C /* LibTomMath, multiple-precision integer library -- Tom St Denis * * LibTomMath is a library that provides multiple-precision * integer arithmetic as well as number theoretic functionality. * * The library was designed directly after the MPI library by * Michael Fromberger but has been written from scratch with * additional optimizations in place. * * The library is free for all purposes without any express * guarantee it works. * * Tom St Denis, [email protected], http://math.libtomcrypt.com */ static const int lnz[16] = { 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0 }; /* Counts the number of lsbs which are zero before the first zero bit */ int mp_cnt_lsb(mp_int *a) { int x; mp_digit q, qq; /* easy out */ if (mp_iszero(a) == 1) { return 0; } /* scan lower digits until non-zero */ for (x = 0; x < a->used && a->dp[x] == 0; x++); q = a->dp[x]; x *= DIGIT_BIT; /* now scan this digit until a 1 is found */ if ((q & 1) == 0) { do { qq = q & 15; x += lnz[qq]; q >>= 4; } while (qq == 0); } return x; } #endif /* $Source: /cvs/libtom/libtommath/bn_mp_cnt_lsb.c,v $ */ /* $Revision: 1.3 $ */ /* $Date: 2006/03/31 14:18:44 $ */