lis_vector_xpay(3f)

✨ lis_vector_xpay(3f) ✨

okay bestie, welcome to the Lis Library Functions manual, this one's about lis_vector_xpay and it is lowkey iconic 🫶

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🌸 NAME 🌸

lis_vector_xpay — calculate the sum of the vectors 💖

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🎀 SYNOPSIS 🎀

subroutine lis_vector_xpay(LIS_SCALAR alpha, LIS_VECTOR x, LIS_VECTOR y,
LIS_INTEGER ierr);

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🦋 DESCRIPTION 🦋

So what it does is, it calculates the sum of the vectors, and the formula is literally:

y = x + alpha * y

that's it, that's the whole vibe. sum of vectors, no cap ✨

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🌈 INPUT 🌈

• alpha — the scalar value 💅
• x, y — the vectors 🍓

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👑 OUTPUT 👑

• y — x + alpha * y, and heads up bestie, vector y is overwritten 😭 like it gets fully replaced, so if you needed the old y… it's gone fr fr 💀

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🔥 SEE ALSO 🔥

• lis(3)
• http://www.ssisc.org/lis/ ⭐

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just so you know: y is overwritten, so don't come for me when your original y is MIA 🙈

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mwah 💋 this page came from the Lis Library Functions manual, dated 6 Sep 2012, and that's the whole thing — ily, go write some linear algebra, you ate 💖✨🎀