M_PI is non-standard

ddemidov · Jul 14, 2018 · e63c095 · e63c095
1 parent 68579a6
commit e63c095
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/amgcl/relaxation/chebyshev.hpp b/amgcl/relaxation/chebyshev.hpp
@@ -100,7 +100,7 @@ class chebyshev {
             // Chebyshev polynomial roots on the interval [lo, hi].
             std::vector<scalar_type> roots(prm.degree);
             for(unsigned i = 0; i < prm.degree; ++i) {
-                scalar_type pi   = static_cast<scalar_type>(M_PI);
+                scalar_type pi   = static_cast<scalar_type>(3.14159265358979323846);
                 scalar_type half = static_cast<scalar_type>(0.5);
 
                 roots[i] = lo + half * (hi - lo) * (1 + cos( pi * ( i + half ) / prm.degree));