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From: voykov@casaccia.enea.it To: gcc-gnats@gcc.gnu.org Subject: libstdc++/10277: Asymptotic of 'exp(x)' for small 'float x'. Date: Mon, 31 Mar 2003 14:16:00 -0000 [thread overview] Message-ID: <20030331132902.15503.qmail@sources.redhat.com> (raw) >Number: 10277 >Category: libstdc++ >Synopsis: Asymptotic of 'exp(x)' for small 'float x'. >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Mon Mar 31 13:36:00 UTC 2003 >Closed-Date: >Last-Modified: >Originator: g. k. voykov >Release: GCC 3.2.2 from DJGPP zip files >Organization: >Environment: Intel Pentium III, Windows 98, Compaq Deskpro >Description: Differences between GCC 3.0.2 and GCC 3.2.2 behaviour calculating 'exp(x)' for small 'float x'. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: ----gnatsweb-attachment---- Content-Type: application/octet-stream; name="gcc322.cxx" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="gcc322.cxx" DQojaWYgMA0KQGVjaG8gR0NDIDMuMi4yIGNvbXBpbGF0aW9uIC4uLg0KQGVjaG8gb2ZmDQpnY2Mg LWMgJTEuY3h4IC1wZWRhbnRpYy1lcnJvcnMgLVdhbGwNCmlmIGVycm9ybGV2ZWwgMSBnb3RvIGVu ZA0KQGVjaG8gICAgICAgICAgICAgIGxpbmtlZGl0IC4uLg0KZ3h4IC1vICUxICUxLm8gLWxtDQpp ZiBlcnJvcmxldmVsIDEgZ290byBlbmQNCmRlbCAlMS5vDQpkZWwgJTENCkBlY2hvICAgICAgICAg ICAgIGV4ZWN1dGlvbiAuLi4NCiUxLmV4ZQ0KOmVuZA0KI2VuZGlmDQoNCi8vIFRlc3RpbmcgJ2V4 cCh4KScgZm9yIHNtYWxsIHZhbHVlcyBvZiAneCcNCg0KI2luY2x1ZGUgPGlvc3RyZWFtPg0KI2lu Y2x1ZGUgPGlvbWFuaXA+DQojaW5jbHVkZSA8Y21hdGg+DQp1c2luZyBuYW1lc3BhY2Ugc3RkOw0K DQppbnQgbWFpbigpDQp7DQogICAgLy8gT0sgIQ0KICAgIGNvdXQgPDwgIlxuIHNtYWxsIGFyZ3Vt ZW50LCBwb3NpdGl2ZSwgZG91YmxlXG4iOw0KICAgIGRvdWJsZSBkID0gMS4yNWUtMTY7DQogICAg Zm9yIChpbnQgaSA9IDE7IGkgPCAzOyBpKyspIHsNCiAgICAgICAgY291dCA8PCBzY2llbnRpZmlj IDw8IHNldHByZWNpc2lvbigyKQ0KICAgICAgICAgICAgIDw8IHNldHcoMTUpIDw8IGQNCiAgICAg ICAgICAgICA8PCBzZXR3KDIwKSA8PCAxLjAgLSBleHAoZCkgPDwgJ1xuJzsNCiAgICAgICAgZCAv PSAyOw0KICAgIH0NCiAgICBjb3V0IDw8ICIgc21hbGwgYXJndW1lbnQsIG5lZ2F0aXZlLCBkb3Vi bGVcbiI7DQogICAgZCA9IC0xLjAwZS0xNjsNCiAgICBmb3IgKGludCBpID0gMTsgaSA8IDM7IGkr Kykgew0KICAgICAgICBjb3V0IDw8IHNldHcoMTUpIDw8IGQNCiAgICAgICAgICAgICA8PCBzZXR3 KDIwKSA8PCAxLjAgLSBleHAoZCkgPDwgJ1xuJzsNCiAgICAgICAgZCAvPSAyOw0KICAgIH0NCiAg ICBjaW4uZ2V0KCk7DQoNCiAgICAvLyBXQVJOSU5HICENCiAgICBjb3V0IDw8ICJcbiBzbWFsbCBh cmd1bWVudCwgcG9zaXRpdmUsIGZsb2F0XG4iOw0KICAgIGZsb2F0IGYgPSA1LjY4ZS0yMDsNCiAg ICAvL2Zsb2F0IGYgPSA2LjI1ZS04OyAgLy8gR0NDIDMuMC4yDQogICAgZm9yIChpbnQgaSA9IDE7 IGkgPCAzOyBpKyspIHsNCiAgICAgICAgY291dCA8PCBzZXR3KDE1KSA8PCBmDQogICAgICAgICAg ICAgPDwgc2V0dygyMCkgPDwgMS4wIC0gZXhwKGYpIDw8ICdcbic7DQogICAgICAgIGYgLz0gMjsN CiAgICB9DQogICAgY291dCA8PCAiIHNtYWxsIGFyZ3VtZW50LCBuZWdhdGl2ZSwgZmxvYXRcbiI7 DQogICAgZiA9IC0yLjg0ZS0yMDsNCiAgICAvL2YgPSAtNS4wMGUtODsgICAgICAgLy8gR0NDIDMu MC4yDQogICAgZm9yIChpbnQgaSA9IDE7IGkgPCAzOyBpKyspIHsNCiAgICAgICAgY291dCA8PCBz ZXR3KDE1KSA8PCBmDQogICAgICAgICAgICAgPDwgc2V0dygyMCkgPDwgMS4wIC0gZXhwKGYpIDw8 ICdcbic7DQogICAgICAgIGYgLz0gMjsNCiAgICB9DQp9DQoNCiNpZiAwDQogc21hbGwgYXJndW1l bnQsIHBvc2l0aXZlLCBkb3VibGUNCiAgICAgICAxLjI1ZS0xNiAgICAgICAgICAgLTIuMjJlLTE2 DQogICAgICAgNi4yNWUtMTcgICAgICAgICAgICAwLjAwZSswMA0KIHNtYWxsIGFyZ3VtZW50LCBu ZWdhdGl2ZSwgZG91YmxlDQogICAgICAtMS4wMGUtMTYgICAgICAgICAgICAxLjExZS0xNg0KICAg ICAgLTUuMDBlLTE3ICAgICAgICAgICAgMC4wMGUrMDANCg0KIHNtYWxsIGFyZ3VtZW50LCBwb3Np dGl2ZSwgZmxvYXQNCiAgICAgICA1LjY4ZS0yMCAgICAgICAgICAgLTEuMDhlLTE5DQogICAgICAg Mi44NGUtMjAgICAgICAgICAgICAwLjAwZSswMA0KIHNtYWxsIGFyZ3VtZW50LCBuZWdhdGl2ZSwg ZmxvYXQNCiAgICAgIC0yLjg0ZS0yMCAgICAgICAgICAgIDUuNDJlLTIwDQogICAgICAtMS40MmUt MjAgICAgICAgICAgICAwLjAwZSswMA0KI2VuZGlmDQo=
next reply other threads:[~2003-03-31 13:36 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-03-31 14:16 voykov [this message] 2003-04-28 17:21 bkoz 2003-04-29 11:36 Gabriel Dos Reis 2003-05-20 1:52 gdr 2003-05-20 1:56 Gabriel Dos Reis
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