The same code inside and many others

[tigertv]

libqalculate/libqalculate/Number.cc

Lines 4015 to 4021 in 8e9578e

	if(mpfr_cmpabs(i_value->internalLowerFloat(), i_value->internalUpperFloat()) > 0) {
	mpfr_sqr(f_tmp, i_value->internalLowerFloat(), MPFR_RNDU);
	mpfr_sub(f_rl, f_rl, f_tmp, MPFR_RNDD);
	} else {
	mpfr_sqr(f_tmp, i_value->internalLowerFloat(), MPFR_RNDU);
	mpfr_sub(f_rl, f_rl, f_tmp, MPFR_RNDD);
	}

Also, see https://www.viva64.com/en/b/0616/

[hanna-kn]

Fixed.

Most listed errors were harmless or affected very unusual use cases. The most critical error was only present in unreleased code and had already been fixed. The example above in Number.cc resulted in a potentially too narrow interval when calculating the square of a complex interval with different sign for upper and lower endpoint.