diff options
| -rw-r--r-- | math/libm-test-remainder.inc | 4 | ||||
| -rw-r--r-- | sysdeps/ieee754/flt-32/e_remainderf.c | 3 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/e_remainderl.c | 5 |
3 files changed, 11 insertions, 1 deletions
diff --git a/math/libm-test-remainder.inc b/math/libm-test-remainder.inc index 0b846b2ddf..02e1e220db 100644 --- a/math/libm-test-remainder.inc +++ b/math/libm-test-remainder.inc @@ -173,6 +173,10 @@ static const struct test_ff_f_data remainder_test_data[] = TEST_ff_f (remainder, 2, -1, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), TEST_ff_f (remainder, -2, 1, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), TEST_ff_f (remainder, -2, -1, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), + + TEST_ff_f (remainder, 0x1.08001cp-2, 0x1p-24, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED|XFAIL_ROUNDING_IBM128_LIBGCC), + TEST_ff_f (remainder, -0x1.003ffep-126, -0x1.8p-148, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED|XFAIL_ROUNDING_IBM128_LIBGCC), + TEST_ff_f (remainder, 0x1.2c3224p+17, 0x1p-5, plus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED|XFAIL_ROUNDING_IBM128_LIBGCC), }; static void diff --git a/sysdeps/ieee754/flt-32/e_remainderf.c b/sysdeps/ieee754/flt-32/e_remainderf.c index 81781363af..bb066b7162 100644 --- a/sysdeps/ieee754/flt-32/e_remainderf.c +++ b/sysdeps/ieee754/flt-32/e_remainderf.c @@ -56,6 +56,9 @@ __ieee754_remainderf(float x, float p) } } GET_FLOAT_WORD(hx,x); + /* Make sure x is not -0. This can occur only when x = p + and rounding direction is towards negative infinity. */ + if (hx==0x80000000) hx = 0; SET_FLOAT_WORD(x,hx^sx); return x; } diff --git a/sysdeps/ieee754/ldbl-128/e_remainderl.c b/sysdeps/ieee754/ldbl-128/e_remainderl.c index 07a15c2459..1e8605f258 100644 --- a/sysdeps/ieee754/ldbl-128/e_remainderl.c +++ b/sysdeps/ieee754/ldbl-128/e_remainderl.c @@ -64,7 +64,10 @@ __ieee754_remainderl(_Float128 x, _Float128 p) if(x>=p_half) x -= p; } } - GET_LDOUBLE_MSW64(hx,x); + GET_LDOUBLE_WORDS64(hx,lx,x); + /* Make sure x is not -0. This can occur only when x = p + and rounding direction is towards negative infinity. */ + if ((hx==0x8000000000000000ULL)&&(lx==0)) hx = 0; SET_LDOUBLE_MSW64(x,hx^sx); return x; } |