MAT_CLOSE(3)

✨ MAT_CLOSE — closing time bestie 💅

ok so we're in the Library Functions Manual, section 3, and today's main character is Mat_Close 🎀

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🌸 NAME 🌸

Mat_Close — closes an open MATLAB MAT file. that's it. that's the whole job. and she does it flawlessly 💖

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🦋 SYNOPSIS 🦋

#include <matio.h>

int
Mat_Close(mat_t *matfp);

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💜 DESCRIPTION 💜

ok so listen. the Mat_Close() function closes a MATLAB MAT file. but like — which MAT file? the one you opened with Mat_Open() or the one you created with Mat_CreateVer(). so basically if you opened it or birthed it, Mat_Close() is who you call to tuck it in 😌🫶

no cap, that's the entire description. she's simple. she's iconic. she closes files. periodt.

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🔥 RETURN VALUES 🔥

• returns 0 on success — slay ✨
• otherwise, an error value gets returned — and no, it will not tell you which one, that's just the vibe 💀

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🎀 EXAMPLES 🎀

here's a whole little program, and yes it's giving main character energy:

#include "matio.h"

int main(int argc, char **argv)
{
    mat_t *matfp;

    matfp = Mat_Open(argv[1], MAT_ACC_RDONLY);
    if ( NULL == matfp ) {
        fprintf(stderr, "Error opening MAT file %s0, argv[1]);
        return EXIT_FAILURE;
    }

    Mat_Close(matfp);
    return EXIT_SUCCESS;
}

like look at her. opens the file with MAT_ACC_RDONLY, checks if NULL == matfp (because opening can absolutely flop 😭), yells into stderr if it did, bails with EXIT_FAILURE, and if everything's chill she calls Mat_Close(matfp) and returns EXIT_SUCCESS. balance. harmony. closure. literally ✨

👀 side note bestie: the fprintf line in the example is typed out exactly as it appears in the source — "Error opening MAT file %s0, argv[1]); and all. we do not fix it, we do not touch it. copy it character for character or the vibe check fails. 🙈

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🌈 SEE ALSO 🌈

• Mat_Open(3) — the opener, the one who starts it all 🦋
• Mat_CreateVer(3) — the creator, the one who makes something new 🌸

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ok that's the whole page, we ate and left no crumbs 👑

this gem came from Debian, dated September 12, 2019 — so like, an elder, but a respected one. close your files, hydrate, and remember: Mat_Close returns 0 when everything's good 💖✨🎀