GDISP streaming bug fixes

Win32 bitmap support
Win32 Rotation is back to front. Need to check touch and other drivers.

2 files changed, 23 insertions, 6 deletions

diff --git a/include/gmisc/gmisc.h b/include/gmisc/gmisc.h
index 5943e642..ff3d0c76 100644
--- a/include/gmisc/gmisc.h
+++ b/include/gmisc/gmisc.h
@@ -184,6 +184,23 @@ extern "C" {
 		/** @} */
 #endif
 
+#if GMISC_NEED_INVSQRT
+		/**
+		 * @brief	Fast inverse square root function (x^-1/2)
+		 * @return	The approximate inverse square root
+		 *
+		 * @param[in] n	The number to find the inverse square root of
+		 *
+		 * @note	This function generates an approximate result. Higher accuracy (at the expense
+		 * 			of speed) can be obtained by modifying the source code (the necessary line
+		 * 			is already there - just commented out).
+		 * @note	This function relies on the internal machine format of a float and a long.
+		 * 			If your machine architecture is very unusual this function may not work.
+		 *
+		 * @api
+		 */
+		float invsqrt(float n);
+#endif
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/gmisc/options.h b/include/gmisc/options.h
index d5cf5898..73b41800 100644
--- a/include/gmisc/options.h
+++ b/include/gmisc/options.h
@@ -28,18 +28,18 @@
 		#define GMISC_NEED_ARRAYOPS		FALSE

 	#endif

 	/**

-	 * @brief   Include fast array based trig functions (sin, cos)

+	 * @brief   Include fast fixed point trig functions (sin, cos)

 	 * @details	Defaults to FALSE

 	 */

-	#ifndef GMISC_NEED_FASTTRIG

-		#define GMISC_NEED_FASTTRIG		FALSE

+	#ifndef GMISC_NEED_FIXEDTRIG

+		#define GMISC_NEED_FIXEDTRIG		FALSE

 	#endif

 	/**

-	 * @brief   Include fast fixed point trig functions (sin, cos)

+	 * @brief   Include fast inverse square root (x^-1/2)

 	 * @details	Defaults to FALSE

 	 */

-	#ifndef GMISC_NEED_FIXEDTRIG

-		#define GMISC_NEED_FIXEDTRIG		FALSE

+	#ifndef GMISC_NEED_INVSQRT

+		#define GMISC_NEED_INVSQRT		FALSE

 	#endif

 /**

  * @}