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/* _ufix64toa_r: convert unsigned 64-bit fixed point to ASCII string.

 *

 * This routine converts an unsigned fixed-point number to long double format and

 * then calls _ldtoa_r to do the conversion.

 *

 * Written by Jeff Johnston.

 */

#ifdef __SPE__

#include <_ansi.h>

#include <limits.h>

#include <errno.h>

#include <stdlib.h>

#include <reent.h>

#include "fix64.h"

extern char *_simdldtoa_r _PARAMS((struct _reent *, LONG_DOUBLE_UNION *, int,

                               int, int *, int *, char **));

/*

 * Convert an unsigned fixed-point 64-bit value to string.

 *

 * Ignores `locale' stuff.

 */

char *

_DEFUN (_ufix64toa_r, (rptr, value, mode, ndigits, decpt, sign, rve),

        struct _reent *rptr _AND

        __uint64_t value _AND

        int mode _AND

        int ndigits _AND

        int *decpt _AND

        int *sign _AND

        char **rve)

{

  union long_double_union ldbl;

  union fix64_union fix64;

  unsigned long tmp;

  int exp, negexp;

  /* if input is 0, no additional work is needed */

  if (value == 0)

    {

      ldbl.i[0] = ldbl.i[1] = ldbl.i[2] = ldbl.i[3] = 0;

    }

  else /* otherwise, we calculate long double equivalent of value */

    {

      /* find exponent by locating most-significant one-bit */

      fix64.ll = value;

      negexp = 1;

      if (hiword(fix64) == 0)

        {

          tmp = loword(fix64);

          negexp = 33;

        }

      else

        {

          tmp = hiword(fix64);

          negexp = 1;

        }

      while (negexp < 65)

        {

          if (tmp & 0x80000000)

            break;

          ++negexp;

          tmp <<= 1;

        }

      /* shift input appropriately */

      fix64.ll = value << (negexp - 1 + (Exp_msk1 != 0));

      /* build long double */

      exp = -negexp + Bias;

      word0(ldbl) = (exp << Exp_shift);

      word1(ldbl) = hiword(fix64) << (32-Ebits-1);

      word2(ldbl) = loword(fix64) << (32-Ebits-1);

      word3(ldbl) = 0;

      if (Ebits+1 < 32)

        {

          word0(ldbl) |= hiword(fix64) >> (Ebits + 1);

          word1(ldbl) |= loword(fix64) >> (Ebits + 1);

        }

    }

  /* convert long double to character */

  return _simdldtoa_r (rptr, &ldbl, mode, ndigits, decpt, sign, rve);

}

#endif /* __SPE__ */