diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/PJ_isea.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/PJ_isea.c b/src/PJ_isea.c index 14404cb2..09f1d33c 100644 --- a/src/PJ_isea.c +++ b/src/PJ_isea.c @@ -8,6 +8,10 @@ #include <stdlib.h> #include <float.h> +#ifndef M_PI +# define M_PI 3.14159265358979323846 +#endif + /* * Proj 4 provides its own entry points into * the code, so none of the library functions |