fstrcasecmp(3)

💖 fstrcasecmp — the fuzzy-girlie string matcher 💖

okay so bestie, welcome to fstrcasecmp(3), a page from the Library Functions Manual. no cap, this one is short but it's giving extremely useful. let's get into it 🫶

---

✨ NAME ✨

fstrcasecmp — fuzzy comparison of two strings ignoring case

like, it compares two strings but it's chill about it. and it does NOT care about your capitalization. case? don't know her. 💅

---

✨ SYNOPSIS ✨

#include <fstrcmp.h>
#define FSTRCMP_IDENTICAL
#define FSTRCMP_THRESHOLD
#define FSTRCMP_ERROR
double fstrcasecmp(const char *string1, const char *string2);

so you pull in the header, you get these three little defines — FSTRCMP_IDENTICAL, FSTRCMP_THRESHOLD and FSTRCMP_ERROR — and then there's the actual function, fstrcasecmp(), taking two const char *s named string1 and string2. iconic signature honestly 🌸

---

✨ DESCRIPTION ✨

The fstrcmp() function compares the two strings, string1 and string2, ignoring case.

that's it. that's the whole vibe check. two strings walk in, case gets ignored, a fuzzy number walks out. ✨

---

✨ RETURN VALUE ✨

so what do you actually get back? a floating point value between 0.0 and FSTRCMP_IDENTICAL. let's break it down, bestie:

• 0.0 — the strings are utterly unalike. not even a little bit. strangers. 🥀
• FSTRCMP_IDENTICAL — the strings are identical. soulmates. matching bestie bracelets. 💖
• anything more than FSTRCMP_THRESHOLD — and fyi, FSTRCMP_THRESHOLD lies between 0.0 and FSTRCMP_IDENTICAL — would be considered "similar" by most people. so like, not twins but definitely cousins. 👑

🚨 and then there's FSTRCMP_ERROR, which is always negative, and it means a malloc(3) failure happened. so if you see a negative number come back, that's not a similarity score, that's the malloc girlies failing you. be dramatic about it, you've earned it. 😭

---

✨ SEE ALSO ✨

go read your sisters, they're all slaying in their own lanes:

• fmemcmp(3) — fuzzy comparison of two memory areas
• fstrcasecmpi(3) — fuzzy comparison of two strings ignoring case
• fstrcmp(3) — fuzzy comparison of two strings
• strcasecmp(3) — compare two strings ignoring case

---

✨ COPYRIGHT ✨

fstrcmp version 0.7 Copyright (C) 2009 Peter Miller Peter Miller <pmiller@opensource.org.au>

The comparison code is derived from the fuzzy comparison functions in GNU Gettext 0.17. The GNU Gettext comparison functions were, in turn, derived from GNU Diff 2.7.

Copyright (C) 1988-2009 Free Software Foundation

---

and that's the whole page, bestie 🎀 fstrcmp version 0.7, copyright 2009 Peter Miller, dropped back on fstrcasecmp(3) — go forth and compare things fuzzily, you absolute main character. mwah 💋🦋