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- Stop g++ 4.3.1 -O2 constant propagation using CGAL_IA_STOP_CPROP(). 

- Remove unused function FPU_empiric_test_mul().
This commit is contained in:
Sylvain Pion 2008-06-15 18:31:52 +00:00
parent be98f10bc3
commit 08d1f279b0
1 changed files with 1 additions and 19 deletions
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20
Number_types/test/Number_types/rounding_modes.cpp
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@ -26,7 +26,7 @@ double IA_min_double;
CGAL::FPU_CW_t CGAL::FPU_CW_t
FPU_empiric_test() FPU_empiric_test()
{ {
IA_min_double = CGAL_IA_MIN_DOUBLE; IA_min_double = CGAL_IA_STOP_CPROP(CGAL_IA_MIN_DOUBLE);
double y = 1.0, z = -1.0; double y = 1.0, z = -1.0;
double ye, ze; double ye, ze;
ye = y - IA_min_double; ye = y - IA_min_double;
@ -37,24 +37,6 @@ FPU_empiric_test()
return CGAL_FE_TOWARDZERO; return CGAL_FE_TOWARDZERO;
} }
// This variable is global in order to stop constant propagation.
double m = 0.5;
CGAL::FPU_CW_t FPU_empiric_test_mul ()
{
int i;
for (i=0; i<10; i++) {m*=m; /* std::cout <<c << std::endl; */ }
double a = m*m;
double b = (-m)*m;
std::cout << "m = " << m << "\n m*m = " << a << "\n (-m)*m = " << b;
std::cout << std::endl;
// Note: it's not supposed to work here like that.
if ((a == 0.0) && (b == 0.0)) return CGAL_FE_TONEAREST;
if (a > 0.0) return CGAL_FE_UPWARD;
if (b < 0.0) return CGAL_FE_DOWNWARD;
return CGAL_FE_TOWARDZERO;
}
void print_rounding_name (CGAL::FPU_CW_t r) void print_rounding_name (CGAL::FPU_CW_t r)
{ {
switch (r) { switch (r) {