Change vnl_math_abs to std::

This changement is mandatory for ITKv5
All recent compiler are able to compile with std::

diff --git a/common/clitkMatrix.cxx b/common/clitkMatrix.cxx
index 2c09f311dd523416720c3496e890de46eaf1397b..e4afa7b20c7646e0c64562b1a004d78e88f941f2 100644 (file)
--- a/common/clitkMatrix.cxx
+++ b/common/clitkMatrix.cxx
@@ -35,7 +35,7 @@ Get4x4MatrixDoubleAsString(vtkMatrix4x4 *matrix,
   for (unsigned int j = 0; j < 4; j++){
     double absmax = 0.;
     for (unsigned int i = 0; i < 4; i++)
-      absmax = std::max(absmax, vnl_math_abs(matrix->GetElement(i, j)));
+      absmax = std::max(absmax, std::abs(matrix->GetElement(i, j)));
     unsigned ndigits = (unsigned)std::max(0.,std::log10(absmax))+1;
     width[j] = precision+ndigits+3;
   }