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New posts in 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
What does the following x86 assembly code with the FLDCW instruction do?
Dec 08, 2025
assembly
x86
floating-point
ieee-754
x87
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