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Re: [Bug-glpk] Different generated model on ARMv7 and x86-64

From: Andrew Makhorin
Subject: Re: [Bug-glpk] Different generated model on ARMv7 and x86-64
Date: Sun, 06 Aug 2017 19:33:08 +0300


To see which parameters members are evaluated and in which order please
add a print stmt into the routine take_member_num, file src/mpl/mpl3.c,
as follows (it is marked by #if 1/#endif):

double take_member_num
(     MPL *mpl,
      PARAMETER *par,         /* not changed */
      TUPLE *tuple            /* not changed */
{     MEMBER *memb;
      double value;
      /* find member in the parameter array */
      memb = find_member(mpl, par->array, tuple);
      if (memb != NULL)
      {  /* member exists, so just take its value */
         value = memb->value.num;
      else if (par->assign != NULL)
      {  /* compute value using assignment expression */
         value = eval_numeric(mpl, par->assign);
add:     /* check that the value satisfies to all restrictions, assign
            it to new member, and add the member to the array */
         check_value_num(mpl, par, tuple, value);
         memb = add_member(mpl, par->array, copy_tuple(mpl, tuple));
         memb->value.num = value;
#if 1
xprintf("$$$ %s%s = %g\n",
par->name, format_tuple(mpl, '[', memb->tuple), memb->value.num);
      else if (par->option != NULL)
      {  /* compute default value */

Hope this will shed a light on what really happens.


Andrew Makhorin

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