diff options
| author | Yuval Adam <yuv.adm@gmail.com> | 2014-03-16 14:41:11 +0200 |
|---|---|---|
| committer | Yuval Adam <yuv.adm@gmail.com> | 2014-03-16 14:41:11 +0200 |
| commit | 990090a4cc9070837d31e66b58d40f0c3d038741 (patch) | |
| tree | cf1b905082c364e9b223e0c5058566103138dae5 /utils/sine.h | |
| parent | 7f4da522479c0f00126219f0c23b804c3a93d7a6 (diff) | |
Add usblib and utils
Diffstat (limited to 'utils/sine.h')
| -rw-r--r-- | utils/sine.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/utils/sine.h b/utils/sine.h new file mode 100644 index 0000000..c3f8c51 --- /dev/null +++ b/utils/sine.h @@ -0,0 +1,85 @@ +//*****************************************************************************
+//
+// sine.h - Prototypes for the fixed point sine trigonometric function.
+//
+// Copyright (c) 2006-2014 Texas Instruments Incorporated. All rights reserved.
+// Software License Agreement
+//
+// Texas Instruments (TI) is supplying this software for use solely and
+// exclusively on TI's microcontroller products. The software is owned by
+// TI and/or its suppliers, and is protected under applicable copyright
+// laws. You may not combine this software with "viral" open-source
+// software in order to form a larger program.
+//
+// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
+// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
+// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
+// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
+// DAMAGES, FOR ANY REASON WHATSOEVER.
+//
+// This is part of revision 2.1.0.12573 of the Tiva Utility Library.
+//
+//*****************************************************************************
+
+#ifndef __SINE_H__
+#define __SINE_H__
+
+//*****************************************************************************
+//
+// If building with a C++ compiler, make all of the definitions in this header
+// have a C binding.
+//
+//*****************************************************************************
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+//*****************************************************************************
+//
+//! \addtogroup sine_api
+//! @{
+//
+//*****************************************************************************
+
+//*****************************************************************************
+//
+//! Computes an approximation of the cosine of the input angle.
+//!
+//! \param ui32Angle is an angle expressed as a 0.32 fixed-point value that is
+//! the percentage of the way around a circle.
+//!
+//! This function computes the cosine for the given input angle. The angle is
+//! specified in 0.32 fixed point format, and is therefore always between 0 and
+//! 360 degrees, inclusive of 0 and exclusive of 360.
+//!
+//! \return Returns the cosine of the angle, in 16.16 fixed point format.
+//
+//*****************************************************************************
+#define cosine(ui32Angle) sine((ui32Angle) + 0x40000000)
+
+//*****************************************************************************
+//
+// Close the Doxygen group.
+//! @}
+//
+//*****************************************************************************
+
+//*****************************************************************************
+//
+// Prototype for the fixed point sine function.
+//
+//*****************************************************************************
+extern int32_t sine(uint32_t ui32Angle);
+
+//*****************************************************************************
+//
+// Mark the end of the C bindings section for C++ compilers.
+//
+//*****************************************************************************
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __SINE_H__
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