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#include <fenv.h>
#include <setjmp.h>
int
TEST_SETJMP(int argc, char *argv[])
{
jmp_buf env;
int rv;
/* Set up the FPU control word register. */
fesetround(FE_UPWARD);
fedisableexcept(FE_ALL_EXCEPT);
feenableexcept(FE_DIVBYZERO);
rv = SETJMP(env, 0);
if (rv == 0) {
fexcept_t flag = FE_OVERFLOW;
/* Mess with the FPU control word. */
fesetround(FE_DOWNWARD);
fedisableexcept(FE_DIVBYZERO);
/* Set the FPU exception flags. */
fesetexceptflag(&flag, FE_ALL_EXCEPT);
LONGJMP(env, 1);
} else if (rv == 1) {
fexcept_t flag = 0;
/* Verify that the FPU control word is preserved. */
if (fegetround() != FE_UPWARD
|| fegetexcept() != FE_DIVBYZERO)
return (1);
/* Verify that the FPU exception flags weren't clobbered. */
fegetexceptflag(&flag, FE_ALL_EXCEPT);
if (flag != FE_OVERFLOW)
return (1);
return (0);
}
/* This is not supposed to happen. */
return (1);
}
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