StackOverflow Questions for Tag: fast-math

loonatick

Reputation: 1157

Which specific optimization flag causes libm functions to be treated as pure?

cgcccompiler-flagsfast-math

Score: 0

Answers: 1

Samuel Navarro Lou

Reputation: 1198

Does any floating point-intensive code produce bit-exact results in any x86-based architecture?

cx86floating-pointieee-754fast-math

Score: 10

Answers: 2

Ponml

Reputation: 3137

What does gcc's ffast-math actually do?

performancemathgccfloating-pointfast-math

Score: 228

Answers: 3

marcin

Reputation: 3581

What is GCC/Clang equivalent of -fp-model fast=1 in ICC

gccfloating-pointclangiccfast-math

Score: 5

Answers: 2

user23311233

Reputation: 13

How unlock -ffast-math for my custom type?

c++expression-templatesfast-math

Score: 0

Answers: 0

André Puel

Reputation: 9219

Mingw32 std::isnan with -ffast-math

c++g++mingw32fast-mathisnan

Score: 2

Answers: 2

user23311233

Reputation: 13

check for nan under --ffast-math

c++nanfast-math

Score: 0

Answers: 1

bockyboh

Reputation: 31

Vector by Scalar Division with -ffast-math

armssedivisionfast-math

Score: 0

Answers: 0

Sideshow Bob

Reputation: 4716

What is floating point speculation and how does it differ from the compiler's floating point model

c++floating-pointinteliccfast-math

Score: 9

Answers: 3

Sean Xia

Reputation: 11

C++ Eigen::inverse function renders totally wrong array with ffast-math option

ubuntu-18.04eigeneigen3fast-mathg++10

Score: 1

Answers: 0

Aaron Franke

Reputation: 4092

How can I find math operations that would be optimized by `-ffast-math`?

c++mathcompiler-optimizationstatic-analysisfast-math

Score: 5

Answers: 0

Unlikus

Reputation: 1858

Why can't the Rust compiler auto-vectorize this FP dot product implementation?

rustfloating-pointsimdauto-vectorizationfast-math

Score: 3

Answers: 1

einpoklum

Reputation: 132340

Can I determine at compile time whether --use_fast_math was set?

cudanvccfast-math

Score: 2

Answers: 2

Millemila

Reputation: 1660

Fortran code compiled in one Windows machine (2018 Intel processor) gives different results when exe is copied to other machine (2022 Intel processor)

floating-pointfortranintelintel-fortranfast-math

Score: 3

Answers: 1

LiraNuna

Reputation: 67330

Negative NaN is not a NaN?

c++nanfast-math

Score: 39

Answers: 6

Liu Wei

Reputation: 87

Weird LTO behavior with -ffast-math

c++g++glibcltofast-math

Score: 1

Answers: 2

Huy Le

Reputation: 1738

C++ gcc does associative-math flag disable float NAN values?

c++gccoptimizationfloating-pointfast-math

Score: 0

Answers: 1

Ruggero Turra

Reputation: 17740

Auto vectorization on double and ffast-math

gccg++doublevectorizationfast-math

Score: 8

Answers: 4

Albert

Reputation: 68360

std::isinf does not work with -ffast-math. how to check for infinity

c++stdfast-math

Score: 13

Answers: 1

geza

Reputation: 30020

Why does -fno-signed-zeros have an effect on vectorization for minimum search?

c++gccx86auto-vectorizationfast-math

Score: 2

Answers: 0

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StackOverflow Questions for Tag: fast-math

Which specific optimization flag causes libm functions to be treated as pure?

Does any floating point-intensive code produce bit-exact results in any x86-based architecture?

What does gcc&#39;s ffast-math actually do?

What is GCC/Clang equivalent of -fp-model fast=1 in ICC

How unlock -ffast-math for my custom type?

Mingw32 std::isnan with -ffast-math

check for nan under --ffast-math

Vector by Scalar Division with -ffast-math

What is floating point speculation and how does it differ from the compiler&#39;s floating point model

C++ Eigen::inverse function renders totally wrong array with ffast-math option

How can I find math operations that would be optimized by `-ffast-math`?

Why can&#39;t the Rust compiler auto-vectorize this FP dot product implementation?

Can I determine at compile time whether --use_fast_math was set?

Fortran code compiled in one Windows machine (2018 Intel processor) gives different results when exe is copied to other machine (2022 Intel processor)

Negative NaN is not a NaN?

Weird LTO behavior with -ffast-math

C++ gcc does associative-math flag disable float NAN values?

Auto vectorization on double and ffast-math

std::isinf does not work with -ffast-math. how to check for infinity

Why does -fno-signed-zeros have an effect on vectorization for minimum search?

What does gcc's ffast-math actually do?

What is floating point speculation and how does it differ from the compiler's floating point model

Why can't the Rust compiler auto-vectorize this FP dot product implementation?