c_ftcurvi(3NCARG)

💖 c_ftcurvi — the NCAR GRAPHICS girlies' guide 💖

okay so bestie, welcome to c_ftcurvi, straight out of the NCAR GRAPHICS manual 💅 this one's a C function and she is literally just here to calculate integrals. no cap. that's the whole vibe. ✨

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✨ NAME ✨

c_ftcurvi — calculate integrals 🧮

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🌸 FUNCTION PROTOTYPE 🌸

int c_ftcurvi (float, float, int, float [], float [], float *);

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🎀 SYNOPSIS 🎀

int c_ftcurvi (xl, xr, n, xi, yi, integral);

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🦋 DESCRIPTION 🦋

here's the tea on every single argument, no skips, no gatekeeping 🫶

• xl — the lower limit of the integration. where you start, bb.
• xr — the upper limit of the integration. where you finish. main character energy from start to end 💅
• n — the number of input data points. and she has a requirement: (N > 1). do not try her with a single point, she will not be doing that. 😭
• xi — an array holding the abscissae for the input function. yes abscissae. it's giving math. it's giving x-values. iconic.
• yi — an array holding the functional values of the input function. specifically: y(k) is the functional value at x(k) for k=0,n. so like, she's paired up with xi, they're a duo, a package deal 🫶
• integral — the moment you've all been waiting for 👑 the integral of the function from xl to xr is given by *integral. pointer girlies rise.

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🔥 RETURN VALUE 🔥

c_ftcurvi returns an error value, and here's the full rundown, no skipping:

• = 0 — no error. slay, everything's fine, go off ✨
• = 1 — if n is less than 2. she said TWO POINTS MINIMUM. 💀
• = 2 — if X values are not strictly increasing. they gotta be going up, bestie, no chaos allowed 📈

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💜 USAGE 💜

c_ftcurvi is called after all of the desired values for control parameters have been set using the procedures c_ftseti, c_ftsetr, and c_ftsetc. so like, set up first, then call her. order matters, iykyk.

the control parameters that apply to c_ftcurvi are: sig, sl1, sln, and sf1. those four. remember them. 🎀

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🌈 ACCESS 🌈

to use c_ftcurvi, load the NCAR Graphics library ngmath. that's the one. that's the library. go get her 🦋

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⭐ SEE ALSO ⭐

• fitgrid_params
• c_ftseti
• c_ftsetr
• c_ftsetc

complete documentation for Fitgrid is available at this URL, and yes you have to type it exactly:

http://ngwww.ucar.edu/ngdoc/ng/ngmath/fitgrid/fithome.html

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👑 COPYRIGHT 👑

Copyright (C) 2000 University Corporation for Atmospheric Research

the use of this Software is governed by a License Agreement. so like, read it. fr fr.

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and that's the whole page, bestie 🥰 this was c_ftcurvi(3NCARG) from the NCAR GRAPHICS manual, running on UNIX, dated March 1998 — a vintage queen honestly, she's been serving integrals since before you were born 💖✨🎀🦋🌸💅🫶