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kristerw.blogspot.com | ||
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jlebar.com
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kristerw.github.io
My previous blog post said that computations producing Inf, NaN, or -0.0 in programs compiled with -ffinite-math-only and -fno-signed-zeros might cause the program to behave in strange ways, such as not evaluating either the true or false part of an if-statement. |
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kristerw.github.io
GCC per default enables one optimization for x86_64 that can change the result of floating-point operations: -ffp-contract=fast.1 This allows the compiler to do floating-point expression contraction such as combining multiplication and addition instructions with an FMA instruction.2 -ffp-contract=fast is enabled for C++ and GNU C. It is not enabled for standard C (that is, when compiling with -std=c99, etc.).? The FMA instruction omits the rounding done in the multiplication instruction, making the calculations produce different results for some input values.? |
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drexl.me
This guide will walk you through the setup of a remote machine that will act as a personal VPN server at the cost of 3 to 5 USD per month. We will also configure it to act as a DNS resolver that will automatically block spam, tracking, advertising and malware domains on all of your connected devices. |
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