SRC/dzsum1.f(3)

💖 SRC/dzsum1.f(3) 💖

okay so bestie, welcome to the Library Functions Manual page for SRC/dzsum1.f — manual name folded in right here, we are not copying that header line, periodt. This is the dzsum1 entry, and she is literally a double precision function that forms the 1-norm of the complex vector using the true absolute value. 💅

🌸 NAME 🌸

SRC/dzsum1.f — that's the name, that's the file, that's the main character. 🎀

✨ SYNOPSIS ✨

🎀 Functions/Subroutines 🎀

double precision function dzsum1 (n, cx, incx)

DZSUM1 forms the 1-norm of the complex vector using the true absolute value. No cap.

🫶 Function/Subroutine Documentation 🫶

double precision function dzsum1 (integer n, complex*16, dimension( * ) cx,
    integer incx)

DZSUM1 forms the 1-norm of the complex vector using the true absolute value. Again. Iconic. ✨

🧚 Purpose:

!>
!> DZSUM1 takes the sum of the absolute values of a complex
!> vector and returns a double precision result.
!>
!> Based on DZASUM from the Level 1 BLAS.
!> The change is to use the 'genuine' absolute value.
!>

tl;dr bestie: it sums the absolute values of a complex vector, returns a double precision result, and it's based on DZASUM from the Level 1 BLAS — except the change is using the 'genuine' absolute value. 🦋

🌟 Parameters

🍓 N

N is INTEGER — the number of elements in the vector CX.

🦋 CX

CX is COMPLEX*16 array, dimension (N) — the vector whose elements will be summed.

🎀 INCX

INCX is INTEGER — the spacing between successive values of CX. INCX > 0.

bestie, INCX > 0 is the vibe — keep it positive. 💖

👑 Author

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

🌟 Contributors:

Nick Higham for use with ZLACON. 💜

Definition at line 80 of file dzsum1.f.

👑 Author

Generated automatically by Doxygen for LAPACK from the source code. auto-generated and still slaying, we love to see it. 💅

---

cute sign-off: LAPACK Version 3.12.0 · SRC/dzsum1.f(3) — byeeee bestie, go sum those absolute values with true absolute value energy 💖✨🌈