libsystem_m

Assess

Tools

Apple's math library used by macOS for floating-point functions.

Why it's here

Placed in Assess: 1 article(s) of evidence from 1 source(s), led by security coverage, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.

Evidence (1)

6Hacker News·7/12/2026security
Chrome 148 Makes Math.tanh OS-Fingerprintable
Since Chrome 148, V8 uses the host platform's math library for Math.tanh, causing the function to return slightly different floating-point results on Linux, macOS, and Windows. That makes tanh() a small but usable fingerprinting signal that can reveal the underlying OS and create inconsistencies for browser spoofing systems.