CSRSCL(3)

🦋 csrscl.f — Library Functions Manual 🦋

okay bestie, you're literally looking at the manual page for /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/csrscl.f and it's giving iconic LAPACK energy ✨. lowkey this whole page is a glow-up for one tiny subroutine, and we're gonna read it together, no cap 💅.

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🌸 NAME 🌸

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/csrscl.f — yes the name is literally the file path, and honestly? main character behavior 🎀.

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💖 SYNOPSIS 💖

🫶 Functions/Subroutines

• subroutine CSRSCL (n, sa, sx, incx) — CSRSCL multiplies a vector by the reciprocal of a real scalar. that's it, that's the vibe 💫.

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👑 Function/Subroutine Documentation 👑

subroutine CSRSCL (integer n, real sa, complex, dimension( * ) sx, integer incx)

CSRSCL multiplies a vector by the reciprocal of a real scalar. obsessed with the clarity tbh 😌.

🎀 Purpose 🎀

!> !> CSRSCL multiplies an n-element complex vector x by the real scalar !> 1/a. This is done without overflow or underflow as long as !> the final result x/a does not overflow or underflow. !>

so like, the whole point is dividing your complex vector x by the real scalar a — and it's built to not overflow or underflow on the way, as long as the final result x/a itself doesn't overflow or underflow. periodt 💅.

💜 Parameters 💜

• N — N is INTEGER. it's the number of components of the vector x. literally the length, bestie ✨.
• SA — SA is REAL. this is the scalar a used to divide each component of x. big warning moment: SA must be >= 0, or the subroutine will divide by zero 😭💀. not me warning you twice.
• SX — SX is COMPLEX array, dimension (1+(N-1)*abs(INCX)). this is the n-element vector x. the whole point 🦋.
• INCX — INCX is INTEGER. it's the increment between successive values of the vector SX. and listen:
  • > 0: SX(1) = X(1) and SX(1+(i-1)*INCX) = x(i), 1< i<= n

that's the mapping, copy it exactly, iykyk 💖.

🌈 Author 🌈

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

all the icons who brought you this routine 🫶👑.

Definition at line 83 of file csrscl.f. yes, line 83, we stan a precise location ⭐.

🧚 Author 🧚

Generated automatically by Doxygen for LAPACK from the source code. the robots made this page and honestly they ate 🤖💅.

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okay that's the whole thing, bestie. LAPACK, Version 3.12.0, and the source path is /home/abui...RC/csrscl.f(3) — now go divide that vector safely, and remember: SA >= 0 or we're in divide-by-zero territory, and we don't do that here 💀🌸.