BN_SET_NEGATIVE(3)

💅 BN_SET_NEGATIVE(3) 💅

okay so bestie, welcome to the Library Functions Manual era of your life — this is the page about poking at a BIGNUM and asking it "are you negative or not, be honest" 🫶

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✨ NAME ✨

BN_set_negative, BN_is_negative — change and inspect the sign of a BIGNUM, no cap 🎀

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🌸 SYNOPSIS 🌸

library “libcrypto”

#include <openssl/bn.h>

void
BN_set_negative(BIGNUM *b, int n);

int
BN_is_negative(const BIGNUM *b);

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🦋 DESCRIPTION 🦋

Okay so BN_set_negative() is literally the vibe-setter here. It sets b to negative if both b and n are non-zero — otherwise it sets it to positive. That's it, that's the whole mood. Both gotta be non-zero for the negativity to hit, iykyk ✨

And BN_is_negative()? That's the vibe check. It tests the sign of b. Just a little peek at whether your number is out here being negative or not 👑

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💖 RETURN VALUES 💖

BN_is_negative() returns 1 if b is negative, or 0 otherwise. Binary queen — no in-between, no "it's complicated" 💅

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🧚 SEE ALSO 🧚

BN_add(3), BN_new(3), BN_set_bit(3), BN_zero(3) — go read these next, they're all iconic in their own way 🌈

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⭐ HISTORY ⭐

BN_set_negative() and BN_is_negative() first appeared in OpenSSL 0.9.8 and have been available since OpenBSD 4.5. like, they've been serving sign-flip realness since forever, fr fr 🎀

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ok that's the whole page bestie, go forth and be negative (or don't, that's also valid) 💀✨

Debian 🌸 June 8, 2025 🦋 — signed off with love, mwah 💖 👑