diff options
Diffstat (limited to 'newlib/libc/machine/powerpc/strtosfix16.c')
| -rw-r--r-- | newlib/libc/machine/powerpc/strtosfix16.c | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/newlib/libc/machine/powerpc/strtosfix16.c b/newlib/libc/machine/powerpc/strtosfix16.c deleted file mode 100644 index d3cfe0781..000000000 --- a/newlib/libc/machine/powerpc/strtosfix16.c +++ /dev/null @@ -1,210 +0,0 @@ -/* -FUNCTION - <<strtosfix16>>, <<strtosfix32>>, <<strtosfix64>>---string to signed fixed point - -INDEX - strtosfix16 -INDEX - strtosfix32 -INDEX - strtosfix64 -INDEX - _strtosfix16_r -INDEX - _strtosfix32_r -INDEX - _strtosfix64_r - -ANSI_SYNOPSIS - #include <stdlib.h> - __int16 strtosfix16 (const char *<[s]>, char **<[ptr]>); - - __int32 strtosfix32 (const char *<[s]>, char **<[ptr]>); - - __int64 strtosfix64 (const char *<[s]>, char **<[ptr]>); - - __int16 _strtosfix16_r (void *<[reent]>, - const char *<[s]>, char **<[ptr]>); - - __int32 _strtosfix32_r (void *<[reent]>, - const char *<[s]>, char **<[ptr]>); - - __int64 _strtosfix64_r (void *<[reent]>, - const char *<[s]>, char **<[ptr]>); - -TRAD_SYNOPSIS - #include <stdlib.h> - __int16 strtosfix16 (<[s]>, <[ptr]>) - char *<[s]>; - char **<[ptr]>; - - __int32 strtosfix32 (<[s]>, <[ptr]>) - char *<[s]>; - char **<[ptr]>; - - __int64 strtosfix64 (<[s]>, <[ptr]>) - char *<[s]>; - char **<[ptr]>; - - __int16 _strtosfix16_r (<[reent]>, <[s]>, <[ptr]>) - char *<[reent]>; - char *<[s]>; - char **<[ptr]>; - - __int32 _strtosfix32_r (<[reent]>, <[s]>, <[ptr]>) - char *<[reent]>; - char *<[s]>; - char **<[ptr]>; - - __int64 _strtosfix64_r (<[reent]>, <[s]>, <[ptr]>) - char *<[reent]>; - char *<[s]>; - char **<[ptr]>; - -DESCRIPTION - The function <<strtosfix16>> converts the string <<*<[s]>>> to - a fixed-point sign + 15-bits fraction representation. The function - follows the same rules as <<strtod>>. - - The substring converted is the longest initial - subsequence of <[s]>, beginning with the first - non-whitespace character, that has the format: - .[+|-]<[digits]>[.][<[digits]>][(e|E)[+|-]<[digits]>] - The substring contains no characters if <[s]> is empty, consists - entirely of whitespace, or if the first non-whitespace - character is something other than <<+>>, <<->>, <<.>>, or a - digit. If the substring is empty, no conversion is done, and - the value of <[s]> is stored in <<*<[ptr]>>>. Otherwise, - the substring is converted, and a pointer to the final string - (which will contain at least the terminating null character of - <[s]>) is stored in <<*<[ptr]>>>. If you want no - assignment to <<*<[ptr]>>>, pass a null pointer as <[ptr]>. - - <<strtosfix32>> is identical to <<strtosfix16>> except that it - converts to fixed-point sign + 31-bits fraction representation. - <<strtosfix64>> is also similar, except that it converts - to fixed-point sign + 63-bit fraction format. - - The alternate functions <<_strtosfix16_r>>, <<_strtosfix32_r>>, - and <<_strtosfix64_r>> are reentrant versions. - The extra argument <[reent]> is a pointer to a reentrancy structure. - -RETURNS - The functions return the converted substring value, if any. If - no conversion can be performed, then 0 is returned. If the converted - value is a NaN, 0 is returned and errno is set to <<EDOM>>. - If the converted value exceeds the maximum positive fixed-point value, - the output value is saturated to the maximum value and <<ERANGE>> is stored in - errno. If the converted value is less than the minimum fixed-point negative - value, then the output is saturated to the minimum value and <<ERANGE>> is stored - in errno. Otherwise, the converted value is returned in the - specified fixed-point format. - -PORTABILITY - <<strtosfix16>>, <<strtosfix32>>, and <<strtosfix64>> are non-standard. - - The OS subroutines of <<strtod>> are required. -*/ - -#ifdef __SPE__ - -#include <_ansi.h> -#include <limits.h> -#include <errno.h> -#include <stdlib.h> -#include <reent.h> -#include "vfieeefp.h" - -/* - * Convert a string to a fixed-point (sign + 15-bits) value. - * - * Ignores `locale' stuff. - */ -__int16_t -_DEFUN (_strtosfix16_r, (rptr, nptr, endptr), - struct _reent *rptr _AND - _CONST char *nptr _AND - char **endptr) -{ - union double_union dbl; - unsigned long tmp, tmp2; - int exp, negexp, sign; - __int16_t result; - - dbl.d = _strtod_r (rptr, nptr, endptr); - - /* treat NAN as domain error, +/- infinity as saturation */ - if (!finite(dbl.d)) - { - if (isnan (dbl.d)) - { - rptr->_errno = EDOM; - return 0; - } - rptr->_errno = ERANGE; - if (word0(dbl) & Sign_bit) - return SHRT_MIN; - return SHRT_MAX; - } - - /* check for normal saturation */ - if (dbl.d >= 1.0) - { - rptr->_errno = ERANGE; - return SHRT_MAX; - } - else if (dbl.d < -1.0) - { - rptr->_errno = ERANGE; - return SHRT_MIN; - } - - /* otherwise we have normal number in range */ - - /* strip off sign and exponent */ - sign = word0(dbl) & Sign_bit; - exp = ((word0(dbl) & Exp_mask) >> Exp_shift) - Bias; - negexp = -exp; - if (negexp > 15) - return 0; - /* add in implicit normalized bit */ - tmp = word0(dbl) | Exp_msk1; - /* remove exponent and sign */ - tmp <<= Ebits; - if (negexp != 0) - { - /* perform rounding */ - tmp2 = tmp + (1 << (negexp - 1)); - result = (short)(tmp2 >> (negexp + 16)); - /* check if rounding caused carry bit which must be added into result */ - if (tmp2 < tmp) - result |= (1 << (16 - negexp)); - /* check if positive saturation has occurred because of rounding */ - if (!sign && result < 0) - { - rptr->_errno = ERANGE; - return SHRT_MAX; - } - } - else - { - /* we have -1.0, no rounding necessary */ - return SHRT_MIN; - } - - return sign ? -result : result; -} - -#ifndef _REENT_ONLY - -__int16_t -_DEFUN (strtosfix16, (s, ptr, base), - _CONST char *s _AND - char **ptr) -{ - return _strtosfix16_r (_REENT, s, ptr); -} - -#endif - -#endif /* __SPE__ */ |