scnrm2.f(3)

🎀 scnrm2.f 🎀

okay so this is the scnrm2.f page from LAPACK, and bestie, it's literally the manual for one tiny but iconic function. come sit with me 💅

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✨ SYNOPSIS ✨

🌸 Functions/Subroutines 🌸

• real function scnrm2 (N, X, INCX) — yeah. that's her. that's SCNRM2. 👑

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💖 Function/Subroutine Documentation 💖

🦋 real function scnrm2 (integer N, complex, dimension(*) X, integer INCX) 🦋

✨ SCNRM2 ✨

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💜 Purpose 💜

okay so here's the whole vibe: SCNRM2 returns the euclidean norm of a vector, and it does it "via the function name", so that

SCNRM2 := sqrt( x**H*x )

that's it. that's the whole job. and she does it flawlessly. no cap. 🔥

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🌈 Parameters 🌈

• N — N is INTEGER. it's the number of elements in the input vector(s). like, how many besties are in the group chat. 💅
• X — X is a COMPLEX array, dimension (N). it's the complex vector with N elements. the actual content. the main characters. 👑
• INCX — INCX is INTEGER. it's the storage spacing between elements of X. iykyk — the stride, bestie. how far apart the elements are living. 🦋

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🧚 Author 🧚

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

like, an entire academic friend group wrote this. obsessed. 🫶

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📅 Date 📅

November 2017

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⭐ Further Details ⭐

• This version written on 25-October-1982.
• Modified on 14-October-1993 to inline the call to CLASSQ.
• Sven Hammarling, Nag Ltd.

the way that this has been serving since 1982 and got a glow-up in 1993... periodt. 💀✨

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🍓 Definition 🍓

Definition at line 77 of file scnrm2.f.

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👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

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and that's the whole page, bestie!! 🎀 this diva Version 3.8.0 dropped on Tue Nov 14 2017, and honestly? she ate. 💅💖🌸