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1 /* LibTomMath, multiple-precision integer library -- Tom St Denis |
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2 * |
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3 * LibTomMath is a library that provides multiple-precision |
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4 * integer arithmetic as well as number theoretic functionality. |
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5 * |
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6 * The library was designed directly after the MPI library by |
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7 * Michael Fromberger but has been written from scratch with |
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8 * additional optimizations in place. |
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9 * |
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10 * The library is free for all purposes without any express |
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11 * guarantee it works. |
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12 * |
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13 * Tom St Denis, [email protected], http://math.libtomcrypt.org |
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14 */ |
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15 #include <tommath.h> |
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16 |
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17 int mp_fwrite(mp_int *a, int radix, FILE *stream) |
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18 { |
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19 char *buf; |
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20 int err, len, x; |
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21 |
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22 if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) { |
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23 return err; |
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24 } |
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25 |
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26 buf = OPT_CAST(char) XMALLOC (len); |
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27 if (buf == NULL) { |
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28 return MP_MEM; |
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29 } |
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30 |
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31 if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) { |
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32 XFREE (buf); |
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33 return err; |
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34 } |
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35 |
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36 for (x = 0; x < len; x++) { |
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37 if (fputc(buf[x], stream) == EOF) { |
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38 XFREE (buf); |
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39 return MP_VAL; |
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40 } |
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41 } |
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42 |
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43 XFREE (buf); |
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44 return MP_OKAY; |
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45 } |
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46 |
