51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
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/* _Stoll function */
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#include <ctype.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdlib.h>
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#include "xmath.h"
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_C_STD_BEGIN
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#define MYMIN (-_LLONG_MAX - _C2) /* LLONG_MIN */
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#define MYMAX _LLONG_MAX /* LLONG_MAX */
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_CRTIMP2_PURE _ULonglong __CLRCALL_PURE_OR_CDECL _Stoullx(const char *, char **, int, int *);
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_CRTIMP2_PURE _Longlong __CLRCALL_PURE_OR_CDECL _Stollx(const char * s, char ** endptr,
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int base, int *perr)
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{ /* convert string to long long, with checking */
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const char *sc;
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char *se, sign;
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_ULonglong x;
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if (endptr == 0)
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endptr = &se;
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for (sc = s; isspace((unsigned char)*sc); ++sc)
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;
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sign = (char)(*sc == '-' || *sc == '+' ? *sc++ : '+');
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x = _Stoullx(sc, endptr, base, perr);
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if (sc == *endptr)
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*endptr = (char *)s;
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if (s == *endptr && x != 0 || sign == '+' && MYMAX < x
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|| sign == '-' && 0 - (_ULonglong)MYMIN < x)
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{ /* overflow */
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errno = ERANGE;
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if (perr != 0)
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*perr = 1;
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return (sign == '-' ? MYMIN : MYMAX);
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}
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else
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return ((_Longlong)(sign == '-' ? 0 - x : x));
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}
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_CRTIMP2_PURE _Longlong (__CLRCALL_PURE_OR_CDECL _Stoll)(const char * s, char ** endptr, int base)
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{ /* convert string, discard error code */
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return (_Stollx(s, endptr, base, 0));
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}
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_C_STD_END
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/*
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* Copyright (c) 1992-2007 by P.J. Plauger. ALL RIGHTS RESERVED.
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* Consult your license regarding permissions and restrictions.
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V5.03:0009 */
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