// Written by Benjamin Kosnik <bkoz@redhat.com>
+#include <cerrno> // For errno
#include <cmath> // For isinf, finite, finitef, fabs
#include <cstdlib> // For strof, strtold
#include <locale>
char* __old = strdup(setlocale(LC_ALL, NULL));
setlocale(LC_ALL, "C");
char* __sanity;
+
+#if !__FLT_HAS_INFINITY__
+ errno = 0;
+#endif
+
#if defined(_GLIBCXX_HAVE_STRTOF)
float __f = strtof(__s, &__sanity);
#else
float __f = static_cast<float>(__d);
#ifdef _GLIBCXX_HAVE_FINITEF
if (!finitef (__f))
- __f = __builtin_huge_valf();
+ __s = __sanity;
#elif defined (_GLIBCXX_HAVE_FINITE)
if (!finite (static_cast<double> (__f)))
- __f = __builtin_huge_valf();
+ __s = __sanity;
#elif defined (_GLIBCXX_HAVE_ISINF)
if (isinf (static_cast<double> (__f)))
- __f = __builtin_huge_valf();
+ __s = __sanity;
#else
if (fabs(__d) > numeric_limits<float>::max())
- __f = __builtin_huge_valf();
+ __s = __sanity;
#endif
#endif
- if (__sanity != __s && __f != __builtin_huge_valf()
- && __f != -__builtin_huge_valf())
+
+ if (__sanity != __s
+#if !__FLT_HAS_INFINITY__
+ && errno != ERANGE)
+#else
+ && __f != __builtin_huge_valf() && __f != -__builtin_huge_valf())
+#endif
__v = __f;
else
__err |= ios_base::failbit;
+
setlocale(LC_ALL, __old);
free(__old);
}
char* __old = strdup(setlocale(LC_ALL, NULL));
setlocale(LC_ALL, "C");
char* __sanity;
+
+#if !__DBL_HAS_INFINITY__
+ errno = 0;
+#endif
+
double __d = strtod(__s, &__sanity);
- if (__sanity != __s && __d != __builtin_huge_val()
- && __d != -__builtin_huge_val())
+
+ if (__sanity != __s
+#if !__DBL_HAS_INFINITY__
+ && errno != ERANGE)
+#else
+ && __d != __builtin_huge_val() && __d != -__builtin_huge_val())
+#endif
__v = __d;
else
__err |= ios_base::failbit;
+
setlocale(LC_ALL, __old);
free(__old);
}
// Assumes __s formatted for "C" locale.
char* __old = strdup(setlocale(LC_ALL, NULL));
setlocale(LC_ALL, "C");
+
+#if !__LDBL_HAS_INFINITY__
+ errno = 0;
+#endif
+
#if defined(_GLIBCXX_HAVE_STRTOLD)
char* __sanity;
long double __ld = strtold(__s, &__sanity);
- if (__sanity != __s && __ld != __builtin_huge_vall()
- && __ld != -__builtin_huge_vall())
+
+ if (__sanity != __s
+#if !__LDBL_HAS_INFINITY__
+ && errno != ERANGE)
+#else
+ && __ld != __builtin_huge_vall() && __ld != -__builtin_huge_vall())
+#endif
__v = __ld;
+
#else
typedef char_traits<char>::int_type int_type;
long double __ld;
int __p = sscanf(__s, "%Lf", &__ld);
+
if (__p && static_cast<int_type>(__p) != char_traits<char>::eof()
- && __ld != __builtin_huge_vall()
- && __ld != -__builtin_huge_vall())
+#if !__LDBL_HAS_INFINITY__
+ && errno != ERANGE)
+#else
+ && __ld != __builtin_huge_vall() && __ld != -__builtin_huge_vall())
+#endif
__v = __ld;
+
#endif
else
__err |= ios_base::failbit;
+
setlocale(LC_ALL, __old);
free(__old);
}