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-rw-r--r--Source/Utils/WarpXConst.H2
1 files changed, 1 insertions, 1 deletions
diff --git a/Source/Utils/WarpXConst.H b/Source/Utils/WarpXConst.H
index 7734d9011..70436cb72 100644
--- a/Source/Utils/WarpXConst.H
+++ b/Source/Utils/WarpXConst.H
@@ -13,7 +13,7 @@ namespace MathConst
// https://physics.nist.gov/cuu/Constants/index.html
namespace PhysConst
{
- static constexpr amrex::Real c = 299792458.;
+ static constexpr amrex::Real c = 299'792'458.;
static constexpr amrex::Real ep0 = 8.8541878128e-12;
static constexpr amrex::Real mu0 = 1.25663706212e-06;
static constexpr amrex::Real q_e = 1.602176634e-19;