http://llvm.org/bugs/show_bug.cgi?id=22707
Bug ID: 22707
Summary: std::isfinite() does not accept convertible-to-double
Product: libc++
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
#include <cmath>
struct A {
A(double x) : x(x) {}
operator double() const { return x; }
double x;
};
A a(1.0);
bool z = std::isfinite(a);
error: no matching function for call to 'isfinite'
bool z = std::isfinite(a);
^~~~~~~~~~~~~
/code/llvm/build/bin/../include/c++/v1/cmath:376:25: note: candidate template
ignored: disabled by 'enable_if' [with _A1 = A]
typename std::enable_if<std::is_arithmetic<_A1>::value, bool>::type
The Standard requires an overload of
bool isfinite(double x);
Instead, libc++ provides a template implementation with a SFINAE checking for
an arithmetic type.
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