From: Amro <amroamroamro@gmail.com>
Date: Sun, 11 Sep 2016 14:33:14 +0000 (+0300)
Subject: avoid using HUGE_VAL to initialize global variable
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=f3d1b3eafc183e6b8dc3a363d72acc86b0f15b53;p=nlopt.git

avoid using HUGE_VAL to initialize global variable

in some older C (not C++) compilers, HUGE_VAL macro is not
always a constant expression (VS2010 is in this category)

Only C99 (section 7.12) guarantees the macro to expand
to a constant expression but not C90 (section 7.5)
---

diff --git a/test/box.c b/test/box.c
index 61596d4..ebe728e 100644
--- a/test/box.c
+++ b/test/box.c
@@ -125,12 +125,12 @@ static double box_constraint(int n, const double *x, double *grad, void *data)
      return 0;
 }
 
-static const double box_lb[5] = {0,1.2,20,9,6.5};
-static const double box_ub[5] = {HUGE_VAL, 2.4, 60, 9.3, 7.0};
-static const double box_xmin[5] = {4.53743, 2.4, 60, 9.3, 7.0};
-
 int main(void)
 {
+     const double box_lb[5] = {0,1.2,20,9,6.5};
+     const double box_ub[5] = {HUGE_VAL, 2.4, 60, 9.3, 7.0};
+     const double box_xmin[5] = {4.53743, 2.4, 60, 9.3, 7.0};
+
      int cdata[6] = {-1,1,-2,2,-3,3};
      double x[5] = {2.52, 2, 37.5, 9.25, 6.8};
      double minf;