SECOND(3)

💖 SECOND(3) — Library Functions Manual energy 💖

okay bestie, gather round 🫶 This is the SECOND page from the LAPACK Library Functions Manual, and the file page it’s serving is /home/abui...EXT_ETIME.f(3). It’s giving auto-generated Doxygen chic, but we’re making it make sense. No cap, every variant and every author credit is staying. ✨

🏷️ NAME

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/INSTALL/second_EXT_ETIME.f

That’s the whole NAME entry — path and all. Literally it. 💅

✨ SYNOPSIS ✨

Functions/Subroutines

• real function SECOND () — the function signature, exactly like that: real function, empty parens, no arguments.
• SECOND Using ETIME — the synopsis label / implementation flavor.

💅 Function/Subroutine Documentation 💅

real function SECOND

Under this heading, the source says the first label is literally:

SECOND Using ETIME SECOND returns nothing

Yes, the wording is a little chaotic. It’s in the source. Keep it. 🫶

The page then gives these implementation labels:

• SECOND Using the INTERNAL function ETIME.
• SECOND Using INTERNAL function CPU_TIME.
• SECOND Using ETIME_

Purpose (EXTERNAL system function ETIME)

Bestie: SECOND returns the user time for a process in seconds. This version gets the time from the EXTERNAL system function ETIME. That’s the whole purpose, periodt. 🔥

Author

• Univ. of Tennessee
• Univ. of California Berkeley
• Univ. of Colorado Denver
• NAG Ltd.

Purpose (system function ETIME_)

SECOND returns the user time for a process in seconds. This version gets the time from the system function ETIME_. Slay, different source, same job. 💫

Author

• Univ. of Tennessee
• Univ. of California Berkeley
• Univ. of Colorado Denver
• NAG Ltd.

Purpose (INTERNAL function CPU_TIME)

SECOND returns the user time for a process in seconds. This version gets the time from the INTERNAL function CPU_TIME. Iconic internal-clock behavior. ⏰

Author

• Univ. of Tennessee
• Univ. of California Berkeley
• Univ. of Colorado Denver
• NAG Ltd.

Purpose (INTERNAL function ETIME)

SECOND returns the user time for a process in seconds. This version gets the time from the INTERNAL function ETIME. Another flavor, same SECOND main character energy. 👑

Author

• Univ. of Tennessee
• Univ. of California Berkeley
• Univ. of Colorado Denver
• NAG Ltd.

Purpose (the returns-nothing fallback)

This version is the sad-but-iconic fallback: SECOND returns nothing instead of returning the user time for a process in seconds. If you’re using that routine, it means that neither EXTERNAL ETIME, EXTERNAL ETIME_, INTERNAL ETIME, nor INTERNAL CPU_TIME is available on your machine. Not dramatic, just facts. 💀

Author

• Univ. of Tennessee
• Univ. of California Berkeley
• Univ. of Colorado Denver
• NAG Ltd.

Definition at line 34 of file second_EXT_ETIME.f.

👑 Author

Generated automatically by Doxygen for LAPACK from the source code.

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Later, bestie — this is LAPACK Version 3.12.0, source path /home/abui...EXT_ETIME.f(3) and that’s the footer sign-off. No date in this one, so no invented date. Mwah 💋