The errors affect negative subnormals and values near powers of 2. testing long double (without inline functions) Failure: Test: logb (-min_subnorm_value) Result: is: -1.01100000000000000000000000000000e+03 -0x1.f98000000000000000000000000p+9 should be: -1.07400000000000000000000000000000e+03 -0x1.0c8000000000000000000000000p+10 difference: 6.30000000000000000000000000000000e+01 0x1.f80000000000000000000000000p+5 ulp : 2495687119199326634196634435584.0000 max.ulp : 0.0000 Failure: Test: logb (0x1.ffffffffffffffp1) Result: is: 2.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+1 should be: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 difference: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 ulp : 40564819207303340847894502572032.0000 max.ulp : 0.0000 Failure: Test: logb (-0x1.ffffffffffffffp1) Result: is: 2.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+1 should be: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 difference: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 ulp : 40564819207303340847894502572032.0000 max.ulp : 0.0000 Failure: Test: logb_downward (-min_subnorm_value) Result: is: -1.01100000000000000000000000000000e+03 -0x1.f98000000000000000000000000p+9 should be: -1.07400000000000000000000000000000e+03 -0x1.0c8000000000000000000000000p+10 difference: 6.30000000000000000000000000000000e+01 0x1.f80000000000000000000000000p+5 ulp : 2495687119199326634196634435584.0000 max.ulp : 0.0000 Failure: Test: logb_downward (0x1.ffffffffffffffp1) Result: is: 2.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+1 should be: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 difference: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 ulp : 40564819207303340847894502572032.0000 max.ulp : 0.0000 Failure: Test: logb_downward (-0x1.ffffffffffffffp1) Result: is: 2.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+1 should be: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 difference: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 ulp : 40564819207303340847894502572032.0000 max.ulp : 0.0000 Failure: Test: logb_towardzero (-min_subnorm_value) Result: is: -1.01100000000000000000000000000000e+03 -0x1.f98000000000000000000000000p+9 should be: -1.07400000000000000000000000000000e+03 -0x1.0c8000000000000000000000000p+10 difference: 6.30000000000000000000000000000000e+01 0x1.f80000000000000000000000000p+5 ulp : 2495687119199326634196634435584.0000 max.ulp : 0.0000 Failure: Test: logb_towardzero (0x1.ffffffffffffffp1) Result: is: 2.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+1 should be: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 difference: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 ulp : 40564819207303340847894502572032.0000 max.ulp : 0.0000 Failure: Test: logb_towardzero (-0x1.ffffffffffffffp1) Result: is: 2.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+1 should be: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 difference: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 ulp : 40564819207303340847894502572032.0000 max.ulp : 0.0000 Failure: Test: logb_upward (-min_subnorm_value) Result: is: -1.01100000000000000000000000000000e+03 -0x1.f98000000000000000000000000p+9 should be: -1.07400000000000000000000000000000e+03 -0x1.0c8000000000000000000000000p+10 difference: 6.30000000000000000000000000000000e+01 0x1.f80000000000000000000000000p+5 ulp : 2495687119199326634196634435584.0000 max.ulp : 0.0000 Failure: Test: logb_upward (0x1.ffffffffffffffp1) Result: is: 2.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+1 should be: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 difference: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 ulp : 40564819207303340847894502572032.0000 max.ulp : 0.0000 Failure: Test: logb_upward (-0x1.ffffffffffffffp1) Result: is: 2.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+1 should be: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 difference: 1.00000000000000000000000000000000e+00 0x1.000000000000000000000000000p+0 ulp : 40564819207303340847894502572032.0000 max.ulp : 0.0000 Test suite completed: 120 test cases plus 116 tests for exception flags and 116 tests for errno executed. 12 errors occurred.
This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GNU C Library master sources". The branch, master has been updated via c064f6a613844181f411aabb2662384a6aefb69e (commit) from 2f7f3cd8cd302bb10908c86f3f7b349df0a78e6a (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c064f6a613844181f411aabb2662384a6aefb69e commit c064f6a613844181f411aabb2662384a6aefb69e Author: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> Date: Fri Apr 28 19:45:52 2017 -0300 powerpc: Fix logbl on power7 [BZ# 21280] 1. Fix the results for negative subnormals by ignoring the signal when normalizing the value. 2. Fix the output when the high part is a power of 2 and the low part is a nonzero number with opposite sign. This fix is based on commit 380bd0fd2418f8988217de950f8b8ff18af0cb2b. After applying this patch, logbl() tests pass cleanly on POWER >= 7. Tested on powerpc, powerpc64 and powerpc64le [BZ #21280] * sysdeps/powerpc/power7/fpu/s_logbl.c (__logbl): Ignore the signal of subnormals and adjust the exponent of power of 2 down when low part has opposite sign. ----------------------------------------------------------------------- Summary of changes: ChangeLog | 7 +++++++ sysdeps/powerpc/power7/fpu/s_logbl.c | 24 ++++++++++++++++++------ 2 files changed, 25 insertions(+), 6 deletions(-)
Fixed on glibc 2.26 with commit ID c064f6a613844181f411aabb2662384a6aefb69e.
This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GNU C Library master sources". The branch, release/2.25/master has been updated via da3e97f94c80c5d05c0d999e87179aad35f7e975 (commit) from 0edeadc0d396aa713b808ae50a0058aca5d3837e (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=da3e97f94c80c5d05c0d999e87179aad35f7e975 commit da3e97f94c80c5d05c0d999e87179aad35f7e975 Author: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> Date: Fri Apr 28 19:45:52 2017 -0300 powerpc: Fix logbl on power7 [BZ# 21280] 1. Fix the results for negative subnormals by ignoring the signal when normalizing the value. 2. Fix the output when the high part is a power of 2 and the low part is a nonzero number with opposite sign. This fix is based on commit 380bd0fd2418f8988217de950f8b8ff18af0cb2b. After applying this patch, logbl() tests pass cleanly on POWER >= 7. Tested on powerpc, powerpc64 and powerpc64le [BZ #21280] * sysdeps/powerpc/power7/fpu/s_logbl.c (__logbl): Ignore the signal of subnormals and adjust the exponent of power of 2 down when low part has opposite sign. (cherry picked from commit c064f6a613844181f411aabb2662384a6aefb69e) ----------------------------------------------------------------------- Summary of changes: ChangeLog | 7 +++++++ sysdeps/powerpc/power7/fpu/s_logbl.c | 24 ++++++++++++++++++------ 2 files changed, 25 insertions(+), 6 deletions(-)