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Can Function Inlining Affect Floating Point Outputs? Exploring FMA and Other Consistency Issues

siboehm.com · published 23 June 2023

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First cited: 10 Aug 2026
Most recent: 10 Aug 2026
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tensor.khalilli.ai

Floating Point Read at the source ↗

10 Aug 2026

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https://www.felixcloutier.com/x86/vfmadd132ps:vfmadd213ps:vfmadd231ps

felixcloutier.com

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agner.org

https://github.com/llvm/llvm-project/blob/7cc57c07e36fc6b4d176cebb28a9bbe637772175/llvm/lib/Target/X86/X86ISelLowering.cpp

github.com

https://github.com/llvm/llvm-project/blob/7cc57c07e36fc6b4d176cebb28a9bbe637772175/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

github.com

https://github.com/cplusplus/draft/releases

github.com

https://stackoverflow.com/questions/49278125/is-floating-point-expression-contraction-allowed-in-c

stackoverflow.com

https://go.dev/ref/spec

go.dev

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clang.llvm.org

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gcc.gnu.org

https://cpp.godbolt.org/z/d1ncE6xr7

cpp.godbolt.org

https://github.com/llvm/llvm-project/blob/7cc57c07e36fc6b4d176cebb28a9bbe637772175/clang/lib/CodeGen/CGExprScalar.cpp

github.com

https://llvm.org/docs/LangRef.html

llvm.org

https://en.cppreference.com/w/c/numeric/math/fma

en.cppreference.com

https://github.com/llvm/llvm-project/blob/7cc57c07e36fc6b4d176cebb28a9bbe637772175/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

github.com

https://twitter.com/Si_Boehm/status/1649843753035907072

twitter.com

https://github.com/llvm/llvm-project/blob/7cc57c07e36fc6b4d176cebb28a9bbe637772175/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

github.com

https://simonbyrne.github.io/notes/fastmath/

simonbyrne.github.io

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https://randomascii.wordpress.com/2013/07/16/floating-point-determinism/

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https://yosefk.com/blog/consistency-how-to-defeat-the-purpose-of-ieee-floating-point.html

yosefk.com