Added SDL_isinf(), SDL_isinff(), SDL_isnan(), and SDL_isnanf()

include/SDL3/SDL_stdinc.h

@@ -2066,6 +2066,62 @@ extern SDL_DECLSPEC double SDLCALL SDL_fmod(double x, double y);
  */
 extern SDL_DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
 
+/**
+ * Return whether the value is infinity.
+ *
+ * \param x double-precision floating point value.
+ * \returns non-zero if the value is infinity, 0 otherwise.
+ *
+ * \threadsafety It is safe to call this function from any thread.
+ *
+ * \since This function is available since SDL 3.0.0.
+ *
+ * \sa SDL_isinff
+ */
+extern SDL_DECLSPEC int SDLCALL SDL_isinf(double x);
+
+/**
+ * Return whether the value is infinity.
+ *
+ * \param x floating point value.
+ * \returns non-zero if the value is infinity, 0 otherwise.
+ *
+ * \threadsafety It is safe to call this function from any thread.
+ *
+ * \since This function is available since SDL 3.0.0.
+ *
+ * \sa SDL_isinf
+ */
+extern SDL_DECLSPEC int SDLCALL SDL_isinff(float x);
+
+/**
+ * Return whether the value is NaN.
+ *
+ * \param x double-precision floating point value.
+ * \returns non-zero if the value is NaN, 0 otherwise.
+ *
+ * \threadsafety It is safe to call this function from any thread.
+ *
+ * \since This function is available since SDL 3.0.0.
+ *
+ * \sa SDL_isnanf
+ */
+extern SDL_DECLSPEC int SDLCALL SDL_isnan(double x);
+
+/**
+ * Return whether the value is NaN.
+ *
+ * \param x floating point value.
+ * \returns non-zero if the value is NaN, 0 otherwise.
+ *
+ * \threadsafety It is safe to call this function from any thread.
+ *
+ * \since This function is available since SDL 3.0.0.
+ *
+ * \sa SDL_isnan
+ */
+extern SDL_DECLSPEC int SDLCALL SDL_isnanf(float x);
+
 /**
  * Compute the natural logarithm of `x`.
  *

include/build_config/SDL_build_config.h.cmake

@@ -152,6 +152,10 @@
 #cmakedefine HAVE_FLOORF 1
 #cmakedefine HAVE_FMOD 1
 #cmakedefine HAVE_FMODF 1
+#cmakedefine HAVE_ISINF 1
+#cmakedefine HAVE_ISINFF 1
+#cmakedefine HAVE_ISNAN 1
+#cmakedefine HAVE_ISNANF 1
 #cmakedefine HAVE_LOG 1
 #cmakedefine HAVE_LOGF 1
 #cmakedefine HAVE_LOG10 1

include/build_config/SDL_build_config_android.h

@@ -109,6 +109,10 @@
 #define HAVE_FLOORF 1
 #define HAVE_FMOD   1
 #define HAVE_FMODF  1
+#define HAVE_ISINF  1
+#define HAVE_ISINF_FLOAT_MACRO 1
+#define HAVE_ISNAN  1
+#define HAVE_ISNAN_FLOAT_MACRO 1
 #define HAVE_LOG    1
 #define HAVE_LOGF   1
 #define HAVE_LOG10  1

include/build_config/SDL_build_config_ios.h

@@ -101,6 +101,10 @@
 #define HAVE_FLOORF 1
 #define HAVE_FMOD   1
 #define HAVE_FMODF  1
+#define HAVE_ISINF  1
+#define HAVE_ISINF_FLOAT_MACRO 1
+#define HAVE_ISNAN  1
+#define HAVE_ISNAN_FLOAT_MACRO 1
 #define HAVE_LOG    1
 #define HAVE_LOGF   1
 #define HAVE_LOG10  1

include/build_config/SDL_build_config_macos.h

@@ -105,6 +105,10 @@
 #define HAVE_FLOORF 1
 #define HAVE_FMOD   1
 #define HAVE_FMODF  1
+#define HAVE_ISINF  1
+#define HAVE_ISINF_FLOAT_MACRO 1
+#define HAVE_ISNAN  1
+#define HAVE_ISNAN_FLOAT_MACRO 1
 #define HAVE_LOG    1
 #define HAVE_LOGF   1
 #define HAVE_LOG10  1

include/build_config/SDL_build_config_windows.h

@@ -175,6 +175,10 @@ typedef unsigned int uintptr_t;
 #define HAVE_FABS   1
 #define HAVE_FLOOR  1
 #define HAVE_FMOD   1
+#define HAVE_ISINF  1
+#define HAVE_ISINF_FLOAT_MACRO 1
+#define HAVE_ISNAN  1
+#define HAVE_ISNAN_FLOAT_MACRO 1
 #define HAVE_LOG    1
 #define HAVE_LOG10  1
 #define HAVE_POW    1

include/build_config/SDL_build_config_wingdk.h

@@ -111,6 +111,10 @@
 #define HAVE_FABS   1
 #define HAVE_FLOOR  1
 #define HAVE_FMOD   1
+#define HAVE_ISINF  1
+#define HAVE_ISINF_FLOAT_MACRO 1
+#define HAVE_ISNAN  1
+#define HAVE_ISNAN_FLOAT_MACRO 1
 #define HAVE_LOG    1
 #define HAVE_LOG10  1
 #define HAVE_POW    1

include/build_config/SDL_build_config_winrt.h

@@ -123,6 +123,10 @@
 #define HAVE_FLOORF 1
 #define HAVE_FMOD   1
 #define HAVE_FMODF  1
+#define HAVE_ISINF  1
+#define HAVE_ISINF_FLOAT_MACRO 1
+#define HAVE_ISNAN  1
+#define HAVE_ISNAN_FLOAT_MACRO 1
 #define HAVE_LOG    1
 #define HAVE_LOGF   1
 #define HAVE_LOG10  1

include/build_config/SDL_build_config_xbox.h

@@ -110,6 +110,10 @@
 #define HAVE_FABS   1
 #define HAVE_FLOOR  1
 #define HAVE_FMOD   1
+#define HAVE_ISINF  1
+#define HAVE_ISINF_FLOAT_MACRO 1
+#define HAVE_ISNAN  1
+#define HAVE_ISNAN_FLOAT_MACRO 1
 #define HAVE_LOG    1
 #define HAVE_LOG10  1
 #define HAVE_POW    1