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Miguel Barao <mjsb@×××××××××××××××.pt> (Thu, 27 Oct 2005 15:24:54 +0100): |
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> The answer is in 'man signbit'. |
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> |
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> signbit is probably just ANDing your float value with 2^31=0x80000000 which |
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> reads -2147483648 if considered as a signed int (like in your printf). |
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Yes. The manpage doesn't say it returns 1, but it returns non-zero. |
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-2147483648 is non-zero. You need to check if the value is !0, not if |
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the value is 1. By the way, this holds for many boolean functions. |
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Regards. |
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----- |
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Get my public key via GnuPG with one of: |
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gpg --keyserver subkeys.pgp.net --recv-keys CE402012 |
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gpg --keyserver ldap://keyserver.pgp.com/ --recv-keys CE402012 |
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|
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Or via web-based keyserver: |
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http://www.keyserver.de/ |
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Key fingerprint: |
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0F12 0912 DFC8 2FC5 E2B8 A23E 6BAC 998E CE40 2012 |
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