HPL_warn(3)

💖 HPL_warn(3) — the HPL Library Functions era 💖

okay bestie, so this is HPL_warn, one of the HPL Library Functions, and she is literally the group chat's designated "hey everyone we have a problem" girlie. no cap, she just displays an error message. that's it. that's the whole job. and she ate. 🎀

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✨ NAME ✨

HPL_warn — displays an error message. 💅

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🦋 SYNOPSIS 🦋

#include "hpl.h"

void HPL_warn( FILE * STREAM, int LINE, const char * SRNAME, const char
* FORM, ...  );

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🌸 DESCRIPTION 🌸

so like, HPL_warn displays an error message. periodt. that's the vibe. 💜

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👑 ARGUMENTS 👑

• STREAM (local input) FILE * — on entry, STREAM tells you which output stream we're sending this energy to. like, where does the message go? that's her. ✨
• LINE (local input) int — on entry, LINE is the line number in the file where the error has occured (yes, "occured", we're quoting the original, don't come for me 😭). and listen: when LINE is not a positive line number, it is ignored. so it's giving "i'll mention the line if it's cute, otherwise i'm not doing it". 💀
• SRNAME (local input) const char * — on entry, SRNAME should be the name of the routine calling this error handler. like, who's the main character that summoned her? that's SRNAME. 🫶
• FORM (local input) const char * — on entry, FORM specifies the format, i.e., how the subsequent arguments are converted for output. it's the blueprint for how the rest of the fit comes together. 🔥
• (local input) ... — on entry, ... is the list of arguments to be printed within the format string. the entourage. the supporting cast. the besties. 🌈

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🌟 EXAMPLE 🌟

#include "hpl.h"

int main(int argc, char *argv[])
{
   HPL_warn( stderr, __LINE__, __FILE__,
             "Demo.\n" );
   exit(0); return(0);
}

not me showing you a whole main that does nothing but warn and then dip 😭 iconic behavior honestly. stderr? check. __LINE__? check. __FILE__? check. "Demo.\n"? check. exit, return, goodbye, slay. 💅

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💜 SEE ALSO 💜

• HPL_abort (3)
• HPL_fprintf (3)

iykyk, the whole HPL squad runs deep. go read those next, bestie. 🧚

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and that's the whole page, fr fr — this was HPL_warn(3) from HPL 2.2, dated February 24, 2016. she's a classic, she's timeless, she's been warning people since 2016 and she's still serving. mwah. 💖✨🎀🦋🌸👑