From 6624dbc07b5a9fb316ed188ef01f65b8eea8b47c Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 20 Sep 2006 17:29:36 +0000 Subject: [BZ #2592] 2006-06-17 Joseph S. Myers [BZ #2592] * math/libm-test.inc (lrint_test_tonearest): New function. (lrint_test_towardzero): New function. (lrint_test_downward): New function. (lrint_test_upward): New function. (main): Run these new tests. * sysdeps/ieee754/dbl-64/s_llrint.c (__llrint): Correct rounding of values near to 0. (two52): Use double not long double. * sysdeps/ieee754/dbl-64/s_lrint.c (__lrint): Likewise. * sysdeps/ieee754/flt-32/s_llrintf.c (__llrintf): Likewise. (two23): Use float not double. * sysdeps/ieee754/flt-32/s_lrintf.c (__lrintf): Likewise. (two23): Use float not double. * sysdeps/ieee754/ldbl-128/s_llrintl.c (__llrintl): Likewise. * sysdeps/ieee754/ldbl-128/s_lrintl.c (__lrintl): Likewise. * sysdeps/ieee754/ldbl-96/s_llrintl.c (__llrintl): Likewise. * sysdeps/ieee754/ldbl-96/s_lrintl.c (__lrintl): Likewise. --- sysdeps/ieee754/flt-32/s_llrintf.c | 10 ++++------ sysdeps/ieee754/flt-32/s_lrintf.c | 10 ++++------ 2 files changed, 8 insertions(+), 12 deletions(-) (limited to 'sysdeps/ieee754/flt-32') diff --git a/sysdeps/ieee754/flt-32/s_llrintf.c b/sysdeps/ieee754/flt-32/s_llrintf.c index 3b9a484a8d..7c6e4bcda4 100644 --- a/sysdeps/ieee754/flt-32/s_llrintf.c +++ b/sysdeps/ieee754/flt-32/s_llrintf.c @@ -1,6 +1,6 @@ /* Round argument to nearest integral value according to current rounding direction. - Copyright (C) 1997 Free Software Foundation, Inc. + Copyright (C) 1997, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1997. @@ -23,7 +23,7 @@ #include "math_private.h" -static const double two23[2] = +static const float two23[2] = { 8.3886080000e+06, /* 0x4B000000 */ -8.3886080000e+06, /* 0xCB000000 */ @@ -49,9 +49,7 @@ __llrintf (float x) if (j0 < (int32_t) (sizeof (long long int) * 8) - 1) { - if (j0 < -1) - return 0; - else if (j0 >= 23) + if (j0 >= 23) result = (long long int) i0 << (j0 - 23); else { @@ -62,7 +60,7 @@ __llrintf (float x) i0 &= 0x7fffff; i0 |= 0x800000; - result = i0 >> (23 - j0); + result = (j0 < 0 ? 0 : i0 >> (23 - j0)); } } else diff --git a/sysdeps/ieee754/flt-32/s_lrintf.c b/sysdeps/ieee754/flt-32/s_lrintf.c index 2a156f7ce2..64486a4c3e 100644 --- a/sysdeps/ieee754/flt-32/s_lrintf.c +++ b/sysdeps/ieee754/flt-32/s_lrintf.c @@ -1,6 +1,6 @@ /* Round argument to nearest integral value according to current rounding direction. - Copyright (C) 1997 Free Software Foundation, Inc. + Copyright (C) 1997, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1997. @@ -23,7 +23,7 @@ #include "math_private.h" -static const double two23[2] = +static const float two23[2] = { 8.3886080000e+06, /* 0x4B000000 */ -8.3886080000e+06, /* 0xCB000000 */ @@ -49,9 +49,7 @@ __lrintf (float x) if (j0 < (int32_t) (sizeof (long int) * 8) - 1) { - if (j0 < -1) - return 0; - else if (j0 >= 23) + if (j0 >= 23) result = (long int) i0 << (j0 - 23); else { @@ -62,7 +60,7 @@ __lrintf (float x) i0 &= 0x7fffff; i0 |= 0x800000; - result = i0 >> (23 - j0); + result = (j0 < 0 ? 0 : i0 >> (23 - j0)); } } else -- cgit 1.4.1