/home/abui...RC/slas2.f(3)

💖 NAME 💖

okay bestie, pull up a chair 🫶 this page is from the Library Functions Manual, and its NAME is a whole absolute path — no cap, copy it exactly: /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/slas2.f.

✨ SYNOPSIS ✨

🧚 Functions/Subroutines 🧚

• subroutine SLAS2 (f, g, h, ssmin, ssmax) — SLAS2 computes singular values of a 2-by-2 triangular matrix. lowkey iconic.

🎀 Function/Subroutine Documentation 🎀

subroutine SLAS2 (real f, real g, real h, real ssmin, real ssmax)

SLAS2 computes singular values of a 2-by-2 triangular matrix. ✨

🌟 Purpose 🌟

okay so SLAS2 computes the singular values of the 2-by-2 matrix:

[  F   G  ]
[  0   H  ].

On return, SSMIN is the smaller singular value and SSMAX is the larger singular value. periodt. 💅

🌈 Parameters 🌈

• F — F is REAL; it’s the (1,1) element of the 2-by-2 matrix. slay.
• G — G is REAL; it’s the (1,2) element of the 2-by-2 matrix. 💖
• H — H is REAL; it’s the (2,2) element of the 2-by-2 matrix. 🦋
• SSMIN — SSMIN is REAL; it’s the smaller singular value. 🎀
• SSMAX — SSMAX is REAL; it’s the larger singular value. ⭐

💜 Author 💜

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

🔥 Further Details 🔥

• Barring over/underflow, all output quantities are correct to within a few units in the last place (ulps), even in the absence of a guard digit in addition/subtraction.
• In IEEE arithmetic, the code works correctly if one matrix element is infinite.
• Overflow will not occur unless the largest singular value itself overflows, or is within a few ulps of overflow.
• Underflow is harmless if underflow is gradual. Otherwise, results may correspond to a matrix modified by perturbations of size near the underflow threshold.

Definition at line 104 of file slas2.f. 🎯

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

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and the footer says this page is from LAPACK, Version 3.12.0, at /home/abui...RC/slas2.f(3) — mwah, bye bestie 💋🦋