| 1 | /*************************************************************************** |
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| 2 | * Copyright (c) 2003-2010, Broadcom Corporation |
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| 3 | * All Rights Reserved |
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| 4 | * Confidential Property of Broadcom Corporation |
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| 5 | * |
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| 6 | * THIS SOFTWARE MAY ONLY BE USED SUBJECT TO AN EXECUTED SOFTWARE LICENSE |
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| 7 | * AGREEMENT BETWEEN THE USER AND BROADCOM. YOU HAVE NO RIGHT TO USE OR |
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| 8 | * EXPLOIT THIS MATERIAL EXCEPT SUBJECT TO THE TERMS OF SUCH AN AGREEMENT. |
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| 9 | * |
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| 10 | * $brcm_Workfile: bmth_fix_priv.h $ |
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| 11 | * $brcm_Revision: Hydra_Software_Devel/4 $ |
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| 12 | * $brcm_Date: 8/26/10 7:46p $ |
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| 13 | * |
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| 14 | * Module Description: |
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| 15 | * |
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| 16 | * Revision History: |
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| 17 | * |
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| 18 | * $brcm_Log: /magnum/commonutils/mth/bmth_fix_priv.h $ |
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| 19 | * |
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| 20 | * Hydra_Software_Devel/4 8/26/10 7:46p albertl |
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| 21 | * SW7405-4556, SW7405-4515: Changed multiplication to use 64-bit |
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| 22 | * intermediate. Added fix to float macro. |
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| 23 | * |
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| 24 | * Hydra_Software_Devel/3 2/17/09 6:48p albertl |
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| 25 | * PR51613: Updated to correct naming conventions. |
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| 26 | * |
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| 27 | * Hydra_Software_Devel/2 8/9/07 12:27p tdo |
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| 28 | * PR33574: Convert more macro defines into functions to avoid compiling |
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| 29 | * errors in WinCE build |
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| 30 | * |
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| 31 | * Hydra_Software_Devel/1 2/22/06 6:11p albertl |
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| 32 | * PR18913: Initial revision of BMTH_FIX fixed point math library. |
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| 33 | * |
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| 34 | * |
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| 35 | ***************************************************************************/ |
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| 36 | #ifndef BMTH_FIX_PRIV_H__ |
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| 37 | #define BMTH_FIX_PRIV_H__ |
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| 38 | |
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| 39 | #ifdef __cplusplus |
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| 40 | extern "C" { |
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| 41 | #endif |
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| 42 | |
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| 43 | #include "bstd.h" |
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| 44 | #include "bkni.h" |
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| 45 | |
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| 46 | #define BMTH_P_FIX_MAX_BITS 32 |
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| 47 | #define BMTH_P_FIX_SIGNED_MAX_BITS (BMTH_P_FIX_MAX_BITS - 1) |
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| 48 | |
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| 49 | #define BMTH_P_FIX_UNSIGNED_PI 0xC90FDAA2 /* pi in 2.30 unsigned fixed notation */ |
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| 50 | #define BMTH_P_FIX_UNSIGNED_HALF_PI (BMTH_P_FIX_UNSIGNED_PI / 2) |
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| 51 | #define BMTH_P_FIX_UNSIGNED_PI_INT_BITS 1 |
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| 52 | #define BMTH_P_FIX_UNSIGNED_RAD_FRACT_BITS 30 |
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| 53 | |
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| 54 | #define BMTH_P_FIX_SINMAG_TABLE_SIZE (sizeof(s_lFixSinMagTable) / sizeof(uint32_t)) |
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| 55 | |
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| 56 | #define BMTH_P_FIX_SIGNED_SINMAG_INT_BITS 1 |
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| 57 | #define BMTH_P_FIX_SIGNED_SINMAG_FRACT_BITS 10 |
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| 58 | #define BMTH_P_FIX_SIGNED_RAD_INT_BITS 3 |
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| 59 | #define BMTH_P_FIX_SIGNED_RAD_FRACT_BITS 28 |
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| 60 | #define BMTH_P_FIX_SIGNED_RAD_INTERP_INT_BITS 1 |
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| 61 | #define BMTH_P_FIX_SIGNED_RAD_INTERP_FRACT_BITS 15 |
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| 62 | |
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| 63 | |
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| 64 | /* creates a mask with signed bit plus integer bits and fraction bits */ |
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| 65 | #define BMTH_P_FIX_SIGNED_MASK(intbits, fractbits) \ |
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| 66 | (0xFFFFFFFF >> (BMTH_P_FIX_SIGNED_MAX_BITS - (intbits + fractbits))) |
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| 67 | |
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| 68 | /* creates signed bit mask of given fixed point format */ |
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| 69 | #define BMTH_P_FIX_SIGN_BIT(intbits, fractbits) \ |
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| 70 | (1 << (intbits + fractbits)) |
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| 71 | |
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| 72 | #ifdef __cplusplus |
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| 73 | } |
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| 74 | #endif |
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| 75 | |
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| 76 | #endif /* #ifndef BMTH_FIX_PRIV_H__ */ |
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| 77 | /* End of File */ |
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