From 4ebf9a1c96d7484529f3ed38fa1b4220e484a2c5 Mon Sep 17 00:00:00 2001 From: Patrick Storz Date: Sun, 24 Mar 2019 21:22:10 +0100 Subject: Update 2geom Now at d9e4cc11f4df4e71e96617699997c989cc9248a4 This is the last version that does not depend on an external copy of double-conversion yet. --- src/2geom/polynomial.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'src/2geom/polynomial.cpp') diff --git a/src/2geom/polynomial.cpp b/src/2geom/polynomial.cpp index ca2389f80..7009be1a2 100644 --- a/src/2geom/polynomial.cpp +++ b/src/2geom/polynomial.cpp @@ -244,7 +244,8 @@ std::vector solve_quadratic(Coord a, Coord b, Coord c) // Use different formulas depending on sign of b to preserve // numerical stability. See e.g.: // http://people.csail.mit.edu/bkph/articles/Quadratics.pdf - Coord t = -0.5 * (b + sgn(b) * delta_sqrt); + int sign = b >= 0 ? 1 : -1; + Coord t = -0.5 * (b + sign * delta_sqrt); result.push_back(t / a); result.push_back(c / t); } -- cgit v1.2.3