wmemmove(3)

✨ wmemmove(3) — the wide-char copy girlies 💖

okay bestie, so this is the manual page for wmemmove out of the Library Functions Manual — it lives in the Standard C library (libc, -lc) and honestly? she's the wide-character glow-up of memmove(3) and she eats. 🦋

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🌸 NAME 🌸

wmemmove — copy an array of wide-characters 💅

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🎀 LIBRARY 🎀

Standard C library (libc, -lc)

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✨ SYNOPSIS ✨

#include <wchar.h>

wchar_t *wmemmove(size_t n;
                  wchar_t dest[n], const wchar_t src[n], size_t n);

like. yes. that's the signature. we don't ask questions, we just include the header. 🫶

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💖 DESCRIPTION 💖

So wmemmove() is literally the wide-character equivalent of what memmove(3) does — same energy, bigger characters. She copies n wide characters from the array starting at src to the array starting at dest. 🌈

And the iconic part? The arrays may overlap. 🎉 That's the whole reason she exists instead of just yelling at you to use wmemcpy(3). She handles the messy overlapping situations with grace, because she's a main character.

🚨 bestie listen. The programmer must ensure that there is room for at least n wide characters at dest. That's on YOU. She will not check. She will simply write there. no cap. 😭

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👑 RETURN VALUE 👑

wmemmove() returns dest. that's it. that's the return. she gives you back the pointer you gave her. slay. ✨

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💀 ATTRIBUTES 💀

For the whole explanation of the terms used in this section, go peek at attributes(7).

• Interface: wmemmove()
• Attribute: Thread safety
• Value: MT-Safe 🔥

so yes, she's thread safe, she can hang in multiple threads at once, she's booked and busy.

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🌟 STANDARDS 🌟

C11, POSIX.1-2008. periodt. 💜

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🧚 HISTORY 🧚

POSIX.1-2001, C99. she's been around, she's a legacy icon, she's been doing this since before some of us were born. 🎀

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🍓 SEE ALSO 🍓

• memmove(3)
• wmemcpy(3)

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that's the whole page bestie! now go forth and move your wide characters safely, overlapping or not. 💖✨🦋

🫶 this one's from Linux man-pages 6.20, dated 2026-02-08, and it's the wmemmove(3) page. love that for us. bye! 💅