c_ftcurvp(3NCARG)

✨ NAME ✨

c_ftcurvp — it's a 1D interpolation situation but make it periodic, bestie 💖 (like, the function loops back around, she's giving circular, she's giving no beginning no end 🌀)

This one lives in the NCAR GRAPHICS manual, and honestly? she's a little icon. 👑

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🌸 FUNCTION PROTOTYPE 🌸

int c_ftcurvp (int, float [], float [], float, int, float [], float []);

look at her. seven args. absolutely unbothered. 💅

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🦋 SYNOPSIS 🦋

int c_ftcurvp (n, xi, yi, p, m, xo, yo);

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🎀 DESCRIPTION 🎀

okay so here's the whole cast, no skips, we're covering everyone:

• n — the number of input data points. and heads up: n > 1, like she needs at least two points to function, we don't do solos here 🙅‍♀️
• xi — an array holding the abscissae for the input function. that's the x-values, the "where" of it all.
• yi — an array with the input functional values. so y(k) is the functional value at x(k) for k=0,n. literally the y-values, matching up with xi, one-to-one, slay.
• p — the period of the function ✨ and this is important, bestie: p must not be less than xi[n-1] - xi[0]. like that's a whole rule, don't try it.
• m — how many interpolated points you want. you're ordering m of them.
• xo — an array with the abscissae for the interpolated values. your new x's, freshly computed.
• yo — an array with the interpolated functional values, where yo(k) is the functional value at xo(k) for k=0,n. your new y's. matching set. periodt. 🫶

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💀 RETURN VALUE 💀

c_ftcurvp hands you back an error value, and it's very "here's the tea" about it:

• = 0 — no error. we ate. 🔥
• = 1 — if n is less than 2. (girl needed more points 😭)
• = 2 — if the period is strictly less than the span of the abscissae. (the p situation from before. she noticed. 👀)

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🌈 USAGE 🌈

so the move is: you call c_ftcurvp after you've already set all the control parameter values you want, using these three besties:

• c_ftseti
• c_ftsetr
• c_ftsetc

and the control parameter that actually applies to c_ftcurvp? that's just sig. that's the one. iykyk.

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🧚 ACCESS 🧚

to use c_ftcurvp, you load the NCAR Graphics library ngmath. that's the one. that's where she lives. 🏠

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⭐ SEE ALSO ⭐

go check out her friends, they're all so valid:

• fitgrid_params
• c_ftseti
• c_ftsetr
• c_ftsetc

and if you want the complete documentation for Fitgrid, it's literally right here, go look, no cap:

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

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👑 COPYRIGHT 👑

Copyright (C) 2000 University Corporation for Atmospheric Research

and fr fr, read this part: the use of this Software is governed by a License Agreement. that's not a vibe, that's a legal thing. 🙈

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and that's the whole page, bestie! this was the UNIX manual page for c_ftcurvp, from the NCAR GRAPHICS crew, dated March 1998 — yes, she's vintage, she's an elder, and she still serves 💜✨ bye!! 🎀