/* Copyright (C) 2008 Free Software Foundation. Verify that __builtin_isinf_sign folds correctly. Origin: Kaveh R. Ghazi, May 17, 2008. */ /* { dg-do link } */ /* All references to link_error should go away at compile-time. */ extern void link_error(int); void __attribute__ ((__noinline__)) foo (float f, double d, long double ld) { /* Test the generic expansion of isinf_sign. */ if (__builtin_isinf_sign(f) != (__builtin_isinf(f) ? (__builtin_signbitf(f) ? -1 : 1) : 0)) link_error (__LINE__); if (__builtin_isinf_sign(d) != (__builtin_isinf(d) ? (__builtin_signbit(d) ? -1 : 1) : 0)) link_error (__LINE__); if (__builtin_isinf_sign(ld) != (__builtin_isinf(ld) ? (__builtin_signbitl(ld) ? -1 : 1) : 0)) link_error (__LINE__); /* In boolean contexts, GCC will fold the inner conditional expression to 1. So isinf_sign folds to plain isinf. */ if ((_Bool)__builtin_isinf_sign(f) != (__builtin_isinf(f) != 0)) link_error (__LINE__); if ((_Bool)__builtin_isinf_sign(d) != (__builtin_isinf(d) != 0)) link_error (__LINE__); if ((_Bool)__builtin_isinf_sign(ld) != (__builtin_isinf(ld) != 0)) link_error (__LINE__); if ((__builtin_isinf_sign(f) != 0) != (__builtin_isinf(f) != 0)) link_error (__LINE__); if ((__builtin_isinf_sign(d) != 0) != (__builtin_isinf(d) != 0)) link_error (__LINE__); if ((__builtin_isinf_sign(ld) != 0) != (__builtin_isinf(ld) != 0)) link_error (__LINE__); if ((__builtin_isinf_sign(f) ? 5 : 6) != (__builtin_isinf(f) ? 5 : 6)) link_error (__LINE__); if ((__builtin_isinf_sign(d) ? 5 : 6) != (__builtin_isinf(d) ? 5 : 6)) link_error (__LINE__); if ((__builtin_isinf_sign(ld) ? 5 : 6) != (__builtin_isinf(ld) ? 5 : 6)) link_error (__LINE__); } int main (void) { foo (1, 2, 3); return 0; }