diff options
Diffstat (limited to 'regress/lib/libc/setjmp-fpu/setjmp-fpu.c')
| -rw-r--r-- | regress/lib/libc/setjmp-fpu/setjmp-fpu.c | 44 |
1 files changed, 30 insertions, 14 deletions
diff --git a/regress/lib/libc/setjmp-fpu/setjmp-fpu.c b/regress/lib/libc/setjmp-fpu/setjmp-fpu.c index 694061dcbb9..11d616ae712 100644 --- a/regress/lib/libc/setjmp-fpu/setjmp-fpu.c +++ b/regress/lib/libc/setjmp-fpu/setjmp-fpu.c @@ -1,46 +1,62 @@ +#include <err.h> #include <fenv.h> #include <setjmp.h> int -TEST_SETJMP(int argc, char *argv[]) +TEST_SETJMP(void) { JMP_BUF env; int rv; /* Set up the FPU control word register. */ - fesetround(FE_UPWARD); + rv = fesetround(FE_UPWARD); + if (rv != 0) + errx(1, "fesetround FE_UPWARD returned %d", rv); fedisableexcept(FE_ALL_EXCEPT); feenableexcept(FE_DIVBYZERO); rv = SETJMP(env, 0); - if (rv == 0) { + switch(rv) { + case 0: { fexcept_t flag = FE_OVERFLOW; /* Mess with the FPU control word. */ - fesetround(FE_DOWNWARD); + rv = fesetround(FE_DOWNWARD); + if (rv != 0) + errx(1, "fesetround FE_DOWNWARD returned %d", rv); fedisableexcept(FE_DIVBYZERO); /* Set the FPU exception flags. */ - fesetexceptflag(&flag, FE_ALL_EXCEPT); + rv = fesetexceptflag(&flag, FE_ALL_EXCEPT); + if (rv != 0) + errx(1, "fesetexceptflag returned %d", rv); LONGJMP(env, 1); - } else if (rv == 1) { + errx(1, "longjmp returned"); + } + case 1: { fexcept_t flag = 0; /* Verify that the FPU control word is preserved. */ - if (fegetround() != FE_UPWARD - || fegetexcept() != FE_DIVBYZERO) - return (1); + rv = fegetround(); + if (rv != FE_UPWARD) + errx(1, "fegetround returned %d, not FE_UPWARD", rv); + rv = fegetexcept(); + if (rv != FE_DIVBYZERO) + errx(1, "fegetexcept returned %d, not FE_DIVBYZERO", + rv); /* Verify that the FPU exception flags weren't clobbered. */ - fegetexceptflag(&flag, FE_ALL_EXCEPT); + rv = fegetexceptflag(&flag, FE_ALL_EXCEPT); + if (rv != 0) + errx(1, "fegetexceptflag returned %d", rv); if (flag != FE_OVERFLOW) - return (1); + errx(1, "except flag is %d, no FE_OVERFLOW", rv); return (0); } - - /* This is not supposed to happen. */ - return (1); + default: + errx(1, "setjmp returned %d", rv); + } } |