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New posts in x87
switching fpu to single precision
Aug 12, 2026
performance
assembly
optimization
x86
x87
Porting MASM5 code in Quake 2 to GAS -- Unexpected rendering results
Aug 08, 2026
c
assembly
masm
gnu-assembler
x87
is this a bug in sqrt function
Aug 08, 2026
c++
assembly
x86
standard-library
x87
Porting old compiler ftol (float to long) function to C
Aug 06, 2026
c++
c
assembly
x86
x87
Accuracy of FSIN and other x87 trigonometric instructions on AMD processors
Aug 02, 2026
floating-point
trigonometry
floating-accuracy
amd-processor
x87
Floating point assembly on intel processor
Jul 06, 2026
assembly
x86
reverse-engineering
fpu
x87
Why the cos function in math.h faster than x86 fcos instruction
Jun 22, 2026
c
assembly
x86
floating-point
x87
Why does gcc compare seemingly equal floating point values as different with "-fexcess-precision=standard"?
May 02, 2026
c++
gcc
x86
floating-point
x87
Loading and storing long doubles in x86-64
Apr 28, 2026
x86
x86-64
compiler-optimization
x87
Why does this simple program compiled with gcc,-mfpmath=387, and an optimization level of -O2 or -O3 produce NaN values?
Apr 22, 2026
c
gcc
x86
floating-point
x87
Can the x87 perform exact division on UNsigned QUADword integers?
Apr 16, 2026
assembly
x86
rounding
integer-division
x87
Are x87 FPU instructions deterministic?
Mar 22, 2026
floating-point
cpu
x87
Return a float from a 64-bit assembly function that uses x87 FPU
Feb 18, 2026
assembly
floating-point
x86-64
masm
x87
Call printf with x87 float
Jan 31, 2026
linux
assembly
x86
nasm
x87
how x87 precision affects square roots?
Jan 26, 2026
assembly
x86
x87
x86: latency and throughput of transcendental functions
Dec 14, 2025
x86
latency
throughput
fpu
x87
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