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Diff for /OpenXM_contrib/gmp/mpq/Attic/cmp_ui.c between version 1.1.1.2 and 1.1.1.3

version 1.1.1.2, 2000/09/09 14:13:04 version 1.1.1.3, 2003/08/25 16:06:34
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    negative based on if U > V, U == V, or U < V.  Vn and Vd may have     negative based on if U > V, U == V, or U < V.  Vn and Vd may have
    common factors.     common factors.
   
 Copyright (C) 1993, 1994, 1996 Free Software Foundation, Inc.  Copyright 1993, 1994, 1996, 2000, 2001, 2002 Free Software Foundation, Inc.
   
 This file is part of the GNU MP Library.  This file is part of the GNU MP Library.
   
Line 25  MA 02111-1307, USA. */
Line 25  MA 02111-1307, USA. */
 #include "gmp-impl.h"  #include "gmp-impl.h"
   
 int  int
 #if __STDC__  
 _mpq_cmp_ui (const MP_RAT *op1, unsigned long int num2, unsigned long int den2)  _mpq_cmp_ui (const MP_RAT *op1, unsigned long int num2, unsigned long int den2)
 #else  
 _mpq_cmp_ui (op1, num2, den2)  
      const MP_RAT *op1;  
      unsigned long int num2;  
      unsigned long int den2;  
 #endif  
 {  {
   mp_size_t num1_size = op1->_mp_num._mp_size;    mp_size_t num1_size = op1->_mp_num._mp_size;
   mp_size_t den1_size = op1->_mp_den._mp_size;    mp_size_t den1_size = op1->_mp_den._mp_size;
   mp_size_t tmp1_size, tmp2_size;    mp_size_t tmp1_size, tmp2_size;
   mp_ptr tmp1_ptr, tmp2_ptr;    mp_ptr tmp1_ptr, tmp2_ptr;
   mp_size_t num1_sign;  
   mp_limb_t cy_limb;    mp_limb_t cy_limb;
   int cc;    int cc;
   TMP_DECL (marker);    TMP_DECL (marker);
   
   #if GMP_NAIL_BITS != 0
     if ((num2 | den2) > GMP_NUMB_MAX)
       {
         mpq_t op2;
         mpq_init (op2);
         mpz_set_ui (mpq_numref (op2), num2);
         mpz_set_ui (mpq_denref (op2), den2);
         cc = mpq_cmp (op1, op2);
         mpq_clear (op2);
         return cc;
       }
   #endif
   
     /* need canonical sign to get right result */
     ASSERT (den1_size > 0);
   
     if (den2 == 0)
       DIVIDE_BY_ZERO;
   
   if (num1_size == 0)    if (num1_size == 0)
     return -(num2 != 0);      return -(num2 != 0);
   if (num1_size < 0)    if (num1_size < 0)
Line 50  _mpq_cmp_ui (op1, num2, den2)
Line 61  _mpq_cmp_ui (op1, num2, den2)
   if (num2 == 0)    if (num2 == 0)
     return num1_size;      return num1_size;
   
   num1_sign = num1_size;  
   num1_size = ABS (num1_size);  
   
   /* NUM1 x DEN2 is either TMP1_SIZE limbs or TMP1_SIZE-1 limbs.    /* NUM1 x DEN2 is either TMP1_SIZE limbs or TMP1_SIZE-1 limbs.
      Same for NUM1 x DEN1 with respect to TMP2_SIZE.  */       Same for NUM1 x DEN1 with respect to TMP2_SIZE.  */
   if (num1_size > den1_size + 1)    if (num1_size > den1_size + 1)
     /* NUM1 x DEN2 is surely larger in magnitude than NUM2 x DEN1.  */      /* NUM1 x DEN2 is surely larger in magnitude than NUM2 x DEN1.  */
     return num1_sign;      return num1_size;
   if (den1_size > num1_sign + 1)    if (den1_size > num1_size + 1)
     /* NUM1 x DEN2 is surely smaller in magnitude than NUM2 x DEN1.  */      /* NUM1 x DEN2 is surely smaller in magnitude than NUM2 x DEN1.  */
     return -num1_sign;      return -num1_size;
   
   TMP_MARK (marker);    TMP_MARK (marker);
   tmp1_ptr = (mp_ptr) TMP_ALLOC ((num1_size + 1) * BYTES_PER_MP_LIMB);    tmp1_ptr = (mp_ptr) TMP_ALLOC ((num1_size + 1) * BYTES_PER_MP_LIMB);
Line 77  _mpq_cmp_ui (op1, num2, den2)
Line 85  _mpq_cmp_ui (op1, num2, den2)
   cc = tmp1_size - tmp2_size != 0    cc = tmp1_size - tmp2_size != 0
     ? tmp1_size - tmp2_size : mpn_cmp (tmp1_ptr, tmp2_ptr, tmp1_size);      ? tmp1_size - tmp2_size : mpn_cmp (tmp1_ptr, tmp2_ptr, tmp1_size);
   TMP_FREE (marker);    TMP_FREE (marker);
   return (num1_sign < 0) ? -cc : cc;    return cc;
 }  }
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  Added in v.1.1.1.3
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