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Look for isinf in std namespace too.

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This commit is contained in:
Victor Zverovich 2013-02-05 08:11:04 -08:00
parent b09f371306
commit 60d51406ef
1 changed files with 13 additions and 2 deletions
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15
format.h
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@ -167,13 +167,21 @@ inline unsigned CountDigits(uint64_t n) {
} }
#ifndef _MSC_VER #ifndef _MSC_VER
inline int SignBit(double value) { inline int SignBit(double value) {
// When compiled in C++11 mode signbit is no longer a macro but a function // When compiled in C++11 mode signbit is no longer a macro but a function
// defined in namespace std and the macro is undefined. // defined in namespace std and the macro is undefined.
using namespace std; using namespace std;
return signbit(value); return signbit(value);
} }
inline int IsInf(double x) {
using namespace std;
return isinf(x);
}
#else #else
inline int SignBit(double value) { inline int SignBit(double value) {
if (value < 0) return 1; if (value < 0) return 1;
if (value == value) return 0; if (value == value) return 0;
@ -181,9 +189,12 @@ inline int SignBit(double value) {
_ecvt(value, 0, &dec, &sign); _ecvt(value, 0, &dec, &sign);
return sign; return sign;
} }
inline int IsInf(double x) { return !_finite(x); }
# undef snprintf # undef snprintf
# define snprintf _snprintf # define snprintf _snprintf
# define isinf(x) (!_finite(x))
#endif #endif
template <typename Char> template <typename Char>
@ -618,7 +629,7 @@ void BasicWriter<Char>::FormatDouble(
return; return;
} }
if (isinf(value)) { if (internal::IsInf(value)) {
// Format infinity ourselves because sprintf's output is not consistent // Format infinity ourselves because sprintf's output is not consistent
// across platforms. // across platforms.
std::size_t size = 4; std::size_t size = 4;