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Fix complex number printing rules 

Prettifies the complex number debug printing and workaround Clang's
implicit complex to real casting bug.

Bug: 71638783
Test: mma
Change-Id: I0482044ade136fa4cc44aaa0bb515061b40e1f76
This commit is contained in:
Yi Kong 2018-01-05 16:22:10 -08:00
parent 558a4f5923
commit 43ccab85ff
1 changed files with 17 additions and 18 deletions
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35
tests/complex_test.cpp
View File

@ -14,8 +14,6 @@
* limitations under the License.
*/
#include <gtest/gtest.h>
#if defined(__BIONIC_LP32_USE_LONG_DOUBLE)
#define COMPLEX_TEST complex_h_force_long_double
#else
@ -43,26 +41,27 @@
#include <math.h> // For M_PI_2/M_PI_2l.
#if 0
// Note that gtest doesn't support complex numbers, so the output from
// assertion failures is misleading/useless (at best you'll only see the real
// part).
// TODO: find out why gtest doesn't use these; until then they're only useful
// for manual printf^Woperator<< debugging.
// Prettify gtest Complex printing.
#include <iostream>
std::ostream& operator<<(std::ostream& os, const double _Complex c) {
os << "(" << creal(c) << "," << cimag(c) << "i)";
return os;
namespace testing {
namespace internal {
inline void PrintTo(const double _Complex& c, std::ostream* os) {
*os << "(" << creal(c) << "," << cimag(c) << "i)";
}
std::ostream& operator<<(std::ostream& os, const float _Complex c) {
os << "(" << crealf(c) << "," << cimagf(c) << "i)";
return os;
inline void PrintTo(const float _Complex& c, std::ostream* os) {
*os << "(" << crealf(c) << "," << cimagf(c) << "i)";
}
std::ostream& operator<<(std::ostream& os, const long double _Complex c) {
os << "(" << creall(c) << "," << cimagl(c) << "i)";
return os;
inline void PrintTo(const long double _Complex& c, std::ostream* os) {
*os << "(" << creall(c) << "," << cimagl(c) << "i)";
}
#endif
}
}
// Macro 'I' defined in complex.h conflicts with gtest.h.
#pragma push_macro("I")
#undef I
#include <gtest/gtest.h>
#pragma pop_macro("I")
TEST(COMPLEX_TEST, cabs) {
ASSERT_EQ(0.0, cabs(0));