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  • Committer: Monty Taylor
  • Date: 2009-03-08 23:45:12 UTC
  • mto: (923.2.1 mordred)
  • mto: This revision was merged to the branch mainline in revision 921.
  • Revision ID: mordred@inaugust.com-20090308234512-tqkygxtu1iaig23s
Removed C99 isnan() usage, which allows us to remove the util/math.{cc,h} workarounds. Yay for standards!

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mystrings/decimal.cc
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      implementation-defined.
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*/
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#include "config.h"
 
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#include <drizzled/global.h>
 
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#include "m_string.h"
 
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#include "m_ctype.h"
 
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#include "decimal.h"
 
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#include <storage/myisam/myisampack.h>
 
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#include <drizzled/util/test.h>
 
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#include <alloca.h>
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#include <m_string.h>
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#include <m_ctype.h>
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#include <storage/myisam/myisampack.h>
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#include <mystrings/decimal.h>
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/*
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  Internally decimal numbers are stored base 10^9 (see DIG_BASE below)
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  So one variable of type decimal_digit_t is limited:
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#define DIG_MASK     100000000
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#define DIG_BASE     1000000000
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#define DIG_MAX      (DIG_BASE-1)
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#define DIG_BASE2    ((dec2)DIG_BASE * (dec2)DIG_BASE)
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#define ROUND_UP(X)  (((X)+DIG_PER_DEC1-1)/DIG_PER_DEC1)
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static const dec1 powers10[DIG_PER_DEC1+1]={
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  1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000};
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  beg= ROUND_UP(beg + 1) - 1;
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  end= ROUND_UP(end) - 1;
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  assert(new_point >= 0);
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  /* We don't want negative new_point below */
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  if (new_point != 0)
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    new_point= ROUND_UP(new_point) - 1;
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  rc = decimal2string(from, strbuf, &len, 0, 0, 0);
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  end= strbuf + len;
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  *to= my_strtod(strbuf, &end, &error);
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  return (rc != E_DEC_OK) ? rc : (error ? E_DEC_OVERFLOW : E_DEC_OK);
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}
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