version 1.1, 2000/01/10 15:35:22 |
version 1.1.1.2, 2000/09/09 14:13:13 |
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/* mpf_cmp_si -- Compare a float with a signed integer. |
/* mpf_cmp_si -- Compare a float with a signed integer. |
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Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc. |
Copyright (C) 1993, 1994, 1995, 1999, 2000 Free Software Foundation, Inc. |
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This file is part of the GNU MP Library. |
This file is part of the GNU MP Library. |
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The GNU MP Library is free software; you can redistribute it and/or modify |
The GNU MP Library is free software; you can redistribute it and/or modify |
it under the terms of the GNU Library General Public License as published by |
it under the terms of the GNU Lesser General Public License as published by |
the Free Software Foundation; either version 2 of the License, or (at your |
the Free Software Foundation; either version 2.1 of the License, or (at your |
option) any later version. |
option) any later version. |
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The GNU MP Library is distributed in the hope that it will be useful, but |
The GNU MP Library is distributed in the hope that it will be useful, but |
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
License for more details. |
License for more details. |
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You should have received a copy of the GNU Library General Public License |
You should have received a copy of the GNU Lesser General Public License |
along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
MA 02111-1307, USA. */ |
MA 02111-1307, USA. */ |
Line 72 mpf_cmp_si (u, vslimb) |
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Line 72 mpf_cmp_si (u, vslimb) |
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up = u->_mp_d; |
up = u->_mp_d; |
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/* 3. Compare the most significant mantissa limb with V. */ |
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if (up[usize - 1] > (unsigned long) vslimb) |
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return usign; |
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else if (up[usize - 1] < (unsigned long) vslimb) |
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return -usign; |
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#define STRICT_MPF_NORMALIZATION 0 |
#define STRICT_MPF_NORMALIZATION 0 |
#if ! STRICT_MPF_NORMALIZATION |
#if ! STRICT_MPF_NORMALIZATION |
/* Ignore zeroes at the low end of U and V. */ |
/* Ignore zeroes at the low end of U. */ |
while (*up == 0) |
while (*up == 0) |
{ |
{ |
up++; |
up++; |
Line 82 mpf_cmp_si (u, vslimb) |
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Line 88 mpf_cmp_si (u, vslimb) |
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} |
} |
#endif |
#endif |
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/* 3. Now, if the number of limbs are different, we have a difference |
/* 4. Now, if the number of limbs are different, we have a difference |
since we have made sure the trailing limbs are not zero. */ |
since we have made sure the trailing limbs are not zero. */ |
if (usize > 1) |
if (usize > 1) |
return usign; |
return usign; |
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/* 4. Compare the mantissas. */ |
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if (*up > vslimb) |
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return usign; |
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else if (*up < vslimb) |
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return -usign; |
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/* Wow, we got zero even if we tried hard to avoid it. */ |
/* Wow, we got zero even if we tried hard to avoid it. */ |
return 0; |
return 0; |