newlib/libc/machine/powerpc/atoufix16.c

   1 /*
   2 FUNCTION
   3    <<atoufix16>>, <<atoufix32>>, <<atoufix64>>---string to unsigned fixed-point
   4
   5 INDEX
   6         atoufix16
   7 INDEX
   8         atoufix32
   9 INDEX
  10         atoufix64
  11 INDEX
  12         _atoufix16_r
  13 INDEX
  14         _atoufix32_r
  15 INDEX
  16         _atoufix64_r
  17
  18 SYNOPSIS
  19         #include <stdlib.h>
  20         __uint16_t atoufix16(const char *<[s]>);
  21         __uint32_t atoufix32(const char *<[s]>);
  22         __uint64_t atoufix32(const char *<[s]>);
  23
  24         __uint16_t _atoufix16_r(struct __reent *, const char *<[s]>);
  25         __uint32_t _atoufix32_r(struct __reent *, const char *<[s]>);
  26         __uint64_t _atoufix32_r(struct __reent *, const char *<[s]>);
  27
  28 DESCRIPTION
  29         <<atoufix16>> converts the initial portion of a string to a
  30         16-bit fraction unsigned fixed point value.
  31         <<atoufix32>> converts the initial portion of a string to a
  32         32-bit fraction unsigned fixed point value.
  33         <<atoufix64>> converts the initial portion of a string to a
  34         64-bit fraction unsigned fixed point value.
  35         <<atoufix16(s)>> is implemented as <<strtoufix16(s, NULL).>>
  36         <<atoufix32(s)>> is implemented as <<strtoufix32(s, NULL).>>
  37         <<atoufix64(s)>> is implemented as <<strtoufix64(s, NULL).>>
  38
  39         The alternate functions <<_atoufix16_r>>, <<_atoufix32_r>>,
  40         and <<_atoufix64_r>> are reentrant versions.
  41         The extra argument <[reent]> is a pointer to a reentrancy structure.
  42
  43 RETURNS
  44         The functions return the converted value, if any. If no conversion was
  45         made, <<0>> is returned.  If saturation occurs, <<ERANGE>> is stored
  46         in errno.
  47
  48 PORTABILITY
  49         <<atoufix16>>, <<atoufix32>>, and <<atoufix64>> are non-standard.
  50
  51         No supporting OS subroutines are directly required.  The
  52         OS subroutines required by <<strtod>> are used.
  53 */
  54
  55 /*
  56  * Jeff Johnston - 02/13/2002
  57  */
  58
  59 #ifdef __SPE__
  60
  61 #include <stdlib.h>
  62 #include <_ansi.h>
  63
  64 __uint16_t
  65 _atoufix16_r (struct _reent *reent,
  66         const char *s)
  67 {
  68   return _strtoufix16_r (reent, s, NULL);
  69 }
  70
  71 #ifndef _REENT_ONLY
  72 __uint16_t
  73 atoufix16 (const char *s)
  74 {
  75   return strtoufix16 (s, NULL);
  76 }
  77
  78 #endif /* !_REENT_ONLY */
  79
  80 #endif /* __SPE__ */