NAME

BN_set_negative, BN_is_negative —

change and inspect the sign of a BIGNUM

SYNOPSIS

#include <openssl/bn.h>

void
BN_set_negative(BIGNUM *b, int n);

int
BN_is_negative(const BIGNUM *b);

BN_set_negative() sets b to negative if both b and n are non-zero, otherwise it sets it to positive.

BN_is_negative() tests the sign of b.

BN_is_negative() returns 1 if b is negative or 0 otherwise.

BN_set_negative() and BN_is_negative() first appeared in OpenSSL 0.9.8 and have been available since OpenBSD 4.5.