snrm2.f(3)

Okay bestie, welcome to snrm2.f(3) from the LAPACK manual 💖. This page is all about snrm2.f, and it's giving “short, iconic, and the math is literally in the name.” Let's go.

🌸 NAME 🌸

snrm2.f — that's the name, no cap. This is the manual page for the snrm2.f file and the snrm2 function/subroutine documented inside it.

✨ SYNOPSIS ✨

🫶 Functions/Subroutines 🫶

real function snrm2 (N, X, INCX)
    SNRM2

💅 Function/Subroutine Documentation 💅

Here's the full signature, exactly as the page gives it:

real function snrm2 (integer N, real, dimension(*) X, integer INCX)
    SNRM2

🎯 Purpose: 🎯

Okay so the purpose is very “the name says it”: SNRM2 returns the euclidean norm of a vector via the function name, so that the math lands as:

SNRM2 := sqrt( x'*x ).

That's the whole vibe. 💖

🍓 Parameters: 🍓

• N — N is INTEGER, and it's the number of elements in input vector(s).
• X — X is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) ).
• INCX — INCX is INTEGER, the storage spacing between elements of SX. Yes, the original really says SX here — keep that exact detail, bestie. 🫶

👑 Author: 👑

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

🌈 Date: 🌈

November 2017

🔥 Further Details: 🔥

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

Definition at line 76 of file snrm2.f.

🧚 Author 🧚

Generated automatically by Doxygen for LAPACK from the source code.

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That's the whole page, bestie 🫶. Cute little footer recap: snrm2.f(3), LAPACK Version 3.8.0, dated Tue Nov 14 2017. Periodt. 💅✨