toolchain/gcc/newlib/libc/machine/powerpc/atosfix16.c

   1 /*
   2 FUNCTION
   3    <<atosfix16>>, <<atosfix32>>, <<atosfix64>>---string to signed fixed-point
   4
   5 INDEX
   6         atosfix16
   7 INDEX
   8         atosfix32
   9 INDEX
  10         atosfix64
  11 INDEX
  12         _atosfix16_r
  13 INDEX
  14         _atosfix32_r
  15 INDEX
  16         _atosfix64_r
  17
  18 ANSI_SYNOPSIS
  19         #include <stdlib.h>
  20         __int16_t atosfix16(const char *<[s]>);
  21         __int32_t atosfix32(const char *<[s]>);
  22         __int64_t atosfix32(const char *<[s]>);
  23
  24         __int16_t _atosfix16_r(struct __reent *, const char *<[s]>);
  25         __int32_t _atosfix32_r(struct __reent *, const char *<[s]>);
  26         __int64_t _atosfix32_r(struct __reent *, const char *<[s]>);
  27
  28 TRAD_SYNOPSIS
  29         #include <stdlib.h>
  30         __int16_t atosfix16(<[s]>)
  31         const char *<[s]>;
  32
  33         __int32_t atosfix32(<[s]>)
  34         const char *<[s]>;
  35
  36         __int64_t atosfix64(<[s]>)
  37         const char *<[s]>;
  38
  39         __int16_t _atosfix16_r(<reent>, <[s]>)
  40         struct _reent *<[reent]>;
  41         const char *<[s]>;
  42
  43         __int32_t _atosfix32_r(<reent>, <[s]>)
  44         struct _reent *<[reent]>;
  45         const char *<[s]>;
  46
  47         __int64_t _atosfix64_r(<reent>, <[s]>)
  48         struct _reent *<[reent]>;
  49         const char *<[s]>;
  50
  51 DESCRIPTION
  52         <<atosfix16>> converts the initial portion of a string to a sign
  53         + 15-bit fraction fixed point value.
  54         <<atosfix32>> converts the initial portion of a string to a sign
  55         + 31-bit fraction fixed point value.
  56         <<atosfix64>> converts the initial portion of a string to a sign
  57         + 63-bit fraction fixed point value.
  58         <<atosfix16(s)>> is implemented as <<strtosfix16(s, NULL).>>
  59         <<atosfix32(s)>> is implemented as <<strtosfix32(s, NULL).>>
  60         <<atosfix64(s)>> is implemented as <<strtosfix64(s, NULL).>>
  61
  62         The alternate functions <<_atosfix16_r>>, <<_atosfix32_r>>,
  63         and <<_atosfix64_r>> are reentrant versions.
  64         The extra argument <[reent]> is a pointer to a reentrancy structure.
  65
  66 RETURNS
  67         The functions return the converted value, if any. If no conversion was
  68         made, <<0>> is returned.  If saturation occurs, <<ERANGE>> is stored
  69         in errno.
  70
  71 PORTABILITY
  72         <<atosfix16>>, <<atosfix32>>, and <<atosfix64>> are non-standard.
  73
  74         No supporting OS subroutines are directly required.  The
  75         OS subroutines required by <<strtod>> are used.
  76 */
  77
  78 /*
  79  * Jeff Johnston - 02/13/2002
  80  */
  81
  82 #ifdef __SPE__
  83
  84 #include <stdlib.h>
  85 #include <_ansi.h>
  86
  87 __int16_t
  88 _DEFUN (_atosfix16_r, (reent, s),
  89         struct _reent *reent _AND
  90         _CONST char *s)
  91 {
  92   return _strtosfix16_r (reent, s, NULL);
  93 }
  94
  95 #ifndef _REENT_ONLY
  96 __int16_t
  97 _DEFUN (atosfix16, (s),
  98         _CONST char *s)
  99 {
 100   return strtosfix16 (s, NULL);
 101 }
 102
 103 #endif /* !_REENT_ONLY */
 104
 105 #endif /* __SPE__ */