ZRZT02(3)

okay so bestie, we're in ZRZT02(3) territory, and the manual name is Library Functions Manual — folded in right here so you don't have to squint at the header line 💅✨

🌸 NAME 🌸

this whole page lives at /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/LIN/zrzt02.f — yes, that's the file, periodt 🎀

✨ SYNOPSIS ✨

Functions/Subroutines

here's the vibe: a double precision function with this exact call —

double precision function ZRZT02 (m, n, af, lda, tau, work, lwork)
    ZRZT02

🦋 Function/Subroutine Documentation 🦋

double precision function ZRZT02

double precision function ZRZT02 (integer m, integer n, complex*16, dimension( lda, * ) af, integer lda, complex*16, dimension( * ) tau, complex*16, dimension( lwork ) work, integer lwork)

ZRZT02

yes bestie, that's the star of the show 👑

🎯 Purpose

ZRZT02 returns this exact ratio:

|| I - Q'*Q || / ( M * eps)

where the matrix Q is defined by the Householder transformations generated by ZTZRZF.

this formula is the whole point — no cap 🫶

🌈 Parameters

• M — M is INTEGER; it's the number of rows of the matrix AF. 🌸
• N — N is INTEGER; it's the number of columns of the matrix AF. ✨
• AF — AF is COMPLEX*16 array, dimension (LDA,N); it's the output of ZTZRZF. 🦋
• LDA — LDA is INTEGER; it's the leading dimension of the array AF. 💅
• TAU — TAU is COMPLEX*16 array, dimension (M); it holds the details of the Householder transformations as returned by ZTZRZF. 🎀
• WORK — WORK is COMPLEX*16 array, dimension (LWORK). 🔥
• LWORK — LWORK is INTEGER; it's the length of the WORK array. It must satisfy LWORK >= N*N+N. 💖

🧚 Author

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

📍 Definition at line 89 of file zrzt02.f.

🌟 Author 🌟

Generated automatically by Doxygen for LAPACK from the source code.

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that's the whole page, bestie. footer sign-off vibes: LAPACK Version 3.12.0, footer path /home/abui...IN/zrzt02.f(3) — and ngl, there's no extra date in the original footer, just the version and that path. mwah 💋🎀