qutil_double_min(3)

✨ qutil_double_min ✨

okay bestie, welcome to the libqthread section 3 club 🎀 this little trio of cuties lives in the manual page qutil_double_min(3) and honestly? they're the friend group that finds the smallest number in the room and does it in parallel, which is iconic behavior 💅

🌸 NAME 🌸

qutil_double_min, qutil_uint_min, qutil_int_min — find the minimum value within an array in parallel

no cap, that's literally the whole job description 🫶

✨ SYNOPSIS ✨

#include <qthread.h>
#include <qthread/qutil.h>

double
qutil_double_min (double *array, size_t length, int checkfeb);

unsigned int
qutil_uint_min (unsigned int *array, size_t length, int checkfeb);

int
qutil_int_min (int *array, size_t length, int checkfeb);

three functions, three flavors, same vibe 🍓

💖 DESCRIPTION 💖

so here's the tea ☕ these functions take an array of length numbers and hand you back the minimum value hiding in there. not the max, not the sum, the min — the smallest one, the underdog, the main character of lowkey-ness 😭

and the way they do it? in parallel ✨ using a lagging-loop structure. yes queen, multithreaded minimum-finding, we love to see it 👑

now about that checkfeb argument, listen up because this part matters:

• if checkfeb is non-zero, these functions will wait for the entries in the array to be full before comparing them 🫶
• they DO NOT check whether the array entries are properly aligned. not even a little. not even a glance 👀
• if the datatype is too small to do a FEB operation on, they will abort — but only if sanity checks are turned on 🚨

bestie pls read that again. alignment is YOUR problem, not theirs. they are not checking. they said what they said 💀

🌈 RETURN VALUE 🌈

the minimum value of the first length entries of array 💖

that's it. that's the whole return. a single tiny value, served fresh, computed in parallel, no notes ⭐

🦋 SEE ALSO 🦋

• qutil_double_mult(3)
• qutil_double_sum(3)
• qutil_double_max(3)
• qutil_uint_mult(3)
• qutil_uint_sum(3)
• qutil_uint_max(3)
• qutil_int_mult(3)
• qutil_int_sum(3)
• qutil_int_max(3)
• qutil_mergesort(3)
• qutil_qsort(3)

go read the rest of the squad, they're all slaying in their own ways 🧚💜

and that's a wrap on this page from libqthread, dated APRIL 2011 📅 — yeah she's an elder but she still eats, fr fr. stay aligned, stay parallel, and never forget to pass a non-zero checkfeb if you actually want the full-wait behavior 😌💅✨