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-rw-r--r--json_object.c7
-rw-r--r--math_compat.h7
2 files changed, 8 insertions, 6 deletions
diff --git a/json_object.c b/json_object.c
index 527cd31..04164d0 100644
--- a/json_object.c
+++ b/json_object.c
@@ -903,15 +903,11 @@ static int json_object_double_to_json_string_format(struct json_object *jso, str
* ECMA 262 section 9.8.1 defines
* how to handle these cases as strings
*/
-#ifdef HAVE_DECL_ISNAN
if (isnan(jso->o.c_double))
{
size = snprintf(buf, sizeof(buf), "NaN");
}
- else
-#endif
-#ifdef HAVE_DECL_ISINF
- if (isinf(jso->o.c_double))
+ else if (isinf(jso->o.c_double))
{
if (jso->o.c_double > 0)
size = snprintf(buf, sizeof(buf), "Infinity");
@@ -919,7 +915,6 @@ static int json_object_double_to_json_string_format(struct json_object *jso, str
size = snprintf(buf, sizeof(buf), "-Infinity");
}
else
-#endif
{
const char *std_format = "%.17g";
int format_drops_decimals = 0;
diff --git a/math_compat.h b/math_compat.h
index fdbad4d..2382fe1 100644
--- a/math_compat.h
+++ b/math_compat.h
@@ -12,6 +12,9 @@
#ifdef HAVE_DECL__ISNAN
#include <float.h>
#define isnan(x) _isnan(x)
+#else
+/* On platforms like AIX and "IBM i" we need to provide our own isnan */
+#define isnan(x) ((x) != (x))
#endif
#endif
@@ -19,6 +22,10 @@
#ifdef HAVE_DECL__FINITE
#include <float.h>
#define isinf(x) (!_finite(x))
+#else
+#include <float.h>
+/* On platforms like AIX and "IBM i" we need to provide our own isinf */
+#define isinf(x) ((x) < -DBL_MAX || (x) > DBL_MAX)
#endif
#endif