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|    comp.compilers    |    Compiler construction, theory, etc. (Mod    |    2,753 messages    |
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|    Message 2,498 of 2,753    |
|    Derek M. Jones to Hans-Peter Diettrich    |
|    Re: Optimization techniques    |
|    26 Apr 19 13:39:58    |
      From: derek@_NOSPAM_knosof.co.uk              All,              On 19/04/2019 23:27, Hans-Peter Diettrich wrote:       > I'm always a bit sceptic when C/C++ and "safe" occur in the same       > sentence. AFAIR a C compiler is allowed to ignore parentheses when       > reordering expressions, what can lead to numeric instabilities.              Not true:       "In the abstract machine, all expressions are evaluated as specified by       the semantics. "              https://c0x.coding-guidelines.com/5.1.2.3.html              --       Derek M. Jones       blog:shape-of-code.coding-guidelines.com       [Keeping in mind the "as if" rule which lets the compiler do whatever       it wants so long as the result is the same. -John]              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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