Symbol: bn_isqrt
crypto/libressl/crypto/bn/bn_isqrt.c
236
return bn_isqrt(NULL, out_perfect, n, ctx);
crypto/libressl/crypto/bn/bn_lcl.h
659
int bn_isqrt(BIGNUM *out_sqrt, int *out_perfect, const BIGNUM *n, BN_CTX *ctx);