* BZ #16503
@ 2022-05-10 9:29 Paul Zimmermann
2022-05-10 14:40 ` Adhemerval Zanella
0 siblings, 1 reply; 4+ messages in thread
From: Paul Zimmermann @ 2022-05-10 9:29 UTC (permalink / raw)
To: libc-alpha
Hi,
has someone access to a SH4 processor? Now that #13304 is fixed,
maybe #16503 is fixed too ([sh] wrong results on fma_towardzero).
Best regards,
Paul
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: BZ #16503 2022-05-10 9:29 BZ #16503 Paul Zimmermann @ 2022-05-10 14:40 ` Adhemerval Zanella 2022-05-10 14:59 ` Paul Zimmermann 0 siblings, 1 reply; 4+ messages in thread From: Adhemerval Zanella @ 2022-05-10 14:40 UTC (permalink / raw) To: libc-alpha On 10/05/2022 06:29, Paul Zimmermann via Libc-alpha wrote: > Hi, > > has someone access to a SH4 processor? Now that #13304 is fixed, > maybe #16503 is fixed too ([sh] wrong results on fma_towardzero). > > Best regards, > Paul > Besides some NaN failures, fma still shows issues: $ ./testrun.sh math/test-double-fma Failure: Test: fma_towardzero (-0x2.33956cdae7c2ep-960, 0x3.8e211518bfea2p-108, -0x2.02c2b59766d9p-1024) Result: is: -1.1185354662458815e-308 -0x0.80b0ad65d9d59p-1022 should be: -1.1185354662458810e-308 -0x0.80b0ad65d9d58p-1022 difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 ulp : 1.0000 max.ulp : 0.0000 Failure: Test: fma_towardzero (-0x4p-1076, 0x8.8p-4, -0x3.ffffffffffffcp-1024) Result: is: -2.2250738585072013e-308 -0x1.0000000000000p-1022 should be: -2.2250738585072008e-308 -0x0.fffffffffffffp-1022 difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 ulp : 1.0000 max.ulp : 0.0000 Failure: Test: fma_towardzero (-0x7.ffffffffffffp-1024, 0x8.0000000000008p-4, -0x4p-1076) Result: is: -2.2250738585072013e-308 -0x1.0000000000000p-1022 should be: -2.2250738585072008e-308 -0x0.fffffffffffffp-1022 difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 ulp : 1.0000 max.ulp : 0.0000 Failure: Test: fma_towardzero (0x2.2a7aca1773e0cp-908, 0x9.6809186a42038p-128, -0x2.c9e356b3f0fp-1024) Result: is: -1.5484573404150452e-308 -0x0.b22757123bbe9p-1022 should be: -1.5484573404150447e-308 -0x0.b22757123bbe8p-1022 difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 ulp : 1.0000 max.ulp : 0.0000 Failure: Test: fma_towardzero (0x4p-1076, 0x8.8p-4, 0x3.ffffffffffffcp-1024) Result: is: 2.2250738585072013e-308 0x1.0000000000000p-1022 should be: 2.2250738585072008e-308 0x0.fffffffffffffp-1022 difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 ulp : 1.0000 max.ulp : 0.0000 Failure: Test: fma_towardzero (0x7.ffffffffffffp-1024, 0x8.0000000000008p-4, 0x4p-1076) Result: is: 2.2250738585072013e-308 0x1.0000000000000p-1022 should be: 2.2250738585072008e-308 0x0.fffffffffffffp-1022 difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 ulp : 1.0000 max.ulp : 0.0000 ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: BZ #16503 2022-05-10 14:40 ` Adhemerval Zanella @ 2022-05-10 14:59 ` Paul Zimmermann 2022-05-10 16:02 ` Adhemerval Zanella 0 siblings, 1 reply; 4+ messages in thread From: Paul Zimmermann @ 2022-05-10 14:59 UTC (permalink / raw) To: Adhemerval Zanella; +Cc: libc-alpha thank you Adhemerval for checking. Isn't it using the soft-fp fma from commit 6f7c009 ? Paul > Date: Tue, 10 May 2022 11:40:01 -0300 > User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 > Thunderbird/91.9.0 > From: Adhemerval Zanella via Libc-alpha <libc-alpha@sourceware.org> > > > > On 10/05/2022 06:29, Paul Zimmermann via Libc-alpha wrote: > > Hi, > > > > has someone access to a SH4 processor? Now that #13304 is fixed, > > maybe #16503 is fixed too ([sh] wrong results on fma_towardzero). > > > > Best regards, > > Paul > > > > Besides some NaN failures, fma still shows issues: > > $ ./testrun.sh math/test-double-fma > > Failure: Test: fma_towardzero (-0x2.33956cdae7c2ep-960, 0x3.8e211518bfea2p-108, -0x2.02c2b59766d9p-1024) > Result: > is: -1.1185354662458815e-308 -0x0.80b0ad65d9d59p-1022 > should be: -1.1185354662458810e-308 -0x0.80b0ad65d9d58p-1022 > difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 > ulp : 1.0000 > max.ulp : 0.0000 > Failure: Test: fma_towardzero (-0x4p-1076, 0x8.8p-4, -0x3.ffffffffffffcp-1024) > Result: > is: -2.2250738585072013e-308 -0x1.0000000000000p-1022 > should be: -2.2250738585072008e-308 -0x0.fffffffffffffp-1022 > difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 > ulp : 1.0000 > max.ulp : 0.0000 > Failure: Test: fma_towardzero (-0x7.ffffffffffffp-1024, 0x8.0000000000008p-4, -0x4p-1076) > Result: > is: -2.2250738585072013e-308 -0x1.0000000000000p-1022 > should be: -2.2250738585072008e-308 -0x0.fffffffffffffp-1022 > difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 > ulp : 1.0000 > max.ulp : 0.0000 > Failure: Test: fma_towardzero (0x2.2a7aca1773e0cp-908, 0x9.6809186a42038p-128, -0x2.c9e356b3f0fp-1024) > Result: > is: -1.5484573404150452e-308 -0x0.b22757123bbe9p-1022 > should be: -1.5484573404150447e-308 -0x0.b22757123bbe8p-1022 > difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 > ulp : 1.0000 > max.ulp : 0.0000 > Failure: Test: fma_towardzero (0x4p-1076, 0x8.8p-4, 0x3.ffffffffffffcp-1024) > Result: > is: 2.2250738585072013e-308 0x1.0000000000000p-1022 > should be: 2.2250738585072008e-308 0x0.fffffffffffffp-1022 > difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 > ulp : 1.0000 > max.ulp : 0.0000 > Failure: Test: fma_towardzero (0x7.ffffffffffffp-1024, 0x8.0000000000008p-4, 0x4p-1076) > Result: > is: 2.2250738585072013e-308 0x1.0000000000000p-1022 > should be: 2.2250738585072008e-308 0x0.fffffffffffffp-1022 > difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 > ulp : 1.0000 > max.ulp : 0.0000 > ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: BZ #16503 2022-05-10 14:59 ` Paul Zimmermann @ 2022-05-10 16:02 ` Adhemerval Zanella 0 siblings, 0 replies; 4+ messages in thread From: Adhemerval Zanella @ 2022-05-10 16:02 UTC (permalink / raw) To: Paul Zimmermann; +Cc: libc-alpha It uses the generic implementation from sysdeps/ieee754/dbl-64/s_fma.c since I built for sh4 (which defines __SH_FPU_ANY__). On 10/05/2022 11:59, Paul Zimmermann wrote: > thank you Adhemerval for checking. > > Isn't it using the soft-fp fma from commit 6f7c009 ? > > Paul > >> Date: Tue, 10 May 2022 11:40:01 -0300 >> User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 >> Thunderbird/91.9.0 >> From: Adhemerval Zanella via Libc-alpha <libc-alpha@sourceware.org> >> >> >> >> On 10/05/2022 06:29, Paul Zimmermann via Libc-alpha wrote: >>> Hi, >>> >>> has someone access to a SH4 processor? Now that #13304 is fixed, >>> maybe #16503 is fixed too ([sh] wrong results on fma_towardzero). >>> >>> Best regards, >>> Paul >>> >> >> Besides some NaN failures, fma still shows issues: >> >> $ ./testrun.sh math/test-double-fma >> >> Failure: Test: fma_towardzero (-0x2.33956cdae7c2ep-960, 0x3.8e211518bfea2p-108, -0x2.02c2b59766d9p-1024) >> Result: >> is: -1.1185354662458815e-308 -0x0.80b0ad65d9d59p-1022 >> should be: -1.1185354662458810e-308 -0x0.80b0ad65d9d58p-1022 >> difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 >> ulp : 1.0000 >> max.ulp : 0.0000 >> Failure: Test: fma_towardzero (-0x4p-1076, 0x8.8p-4, -0x3.ffffffffffffcp-1024) >> Result: >> is: -2.2250738585072013e-308 -0x1.0000000000000p-1022 >> should be: -2.2250738585072008e-308 -0x0.fffffffffffffp-1022 >> difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 >> ulp : 1.0000 >> max.ulp : 0.0000 >> Failure: Test: fma_towardzero (-0x7.ffffffffffffp-1024, 0x8.0000000000008p-4, -0x4p-1076) >> Result: >> is: -2.2250738585072013e-308 -0x1.0000000000000p-1022 >> should be: -2.2250738585072008e-308 -0x0.fffffffffffffp-1022 >> difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 >> ulp : 1.0000 >> max.ulp : 0.0000 >> Failure: Test: fma_towardzero (0x2.2a7aca1773e0cp-908, 0x9.6809186a42038p-128, -0x2.c9e356b3f0fp-1024) >> Result: >> is: -1.5484573404150452e-308 -0x0.b22757123bbe9p-1022 >> should be: -1.5484573404150447e-308 -0x0.b22757123bbe8p-1022 >> difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 >> ulp : 1.0000 >> max.ulp : 0.0000 >> Failure: Test: fma_towardzero (0x4p-1076, 0x8.8p-4, 0x3.ffffffffffffcp-1024) >> Result: >> is: 2.2250738585072013e-308 0x1.0000000000000p-1022 >> should be: 2.2250738585072008e-308 0x0.fffffffffffffp-1022 >> difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 >> ulp : 1.0000 >> max.ulp : 0.0000 >> Failure: Test: fma_towardzero (0x7.ffffffffffffp-1024, 0x8.0000000000008p-4, 0x4p-1076) >> Result: >> is: 2.2250738585072013e-308 0x1.0000000000000p-1022 >> should be: 2.2250738585072008e-308 0x0.fffffffffffffp-1022 >> difference: 4.9406564584124654e-324 0x0.0000000000001p-1022 >> ulp : 1.0000 >> max.ulp : 0.0000 >> ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-05-10 16:02 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2022-05-10 9:29 BZ #16503 Paul Zimmermann 2022-05-10 14:40 ` Adhemerval Zanella 2022-05-10 14:59 ` Paul Zimmermann 2022-05-10 16:02 ` Adhemerval Zanella
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