Add isnan() to proj_math.h

Code updated to use isnan() instead of pj_is_nan().

1 files changed, 0 insertions, 16 deletions

diff --git a/src/pj_internal.c b/src/pj_internal.c
index 891e0b9f..dc528649 100644
--- a/src/pj_internal.c
+++ b/src/pj_internal.c
@@ -438,19 +438,3 @@ void proj_log_func (PJ_CONTEXT *ctx, void *app_data, PJ_LOG_FUNCTION logf) {
     if (0!=logf)
         ctx->logger = logf;
 }
-
-
-#if HAVE_C99_MATH
-/* proj_internal.h defines pj_is_nan as isnan */
-#else
-/*****************************************************************************/
-int pj_is_nan (double val) {
-/******************************************************************************
-    Returns 0 if not a NaN and non-zero if val is a NaN.
-
-    Provides an equivalent to isnan().
-******************************************************************************/
-    /* cppcheck-suppress duplicateExpression */
-    return val != val;
-}
-#endif