diff options
Diffstat (limited to 'libFDK')
| -rw-r--r-- | libFDK/include/fixpoint_math.h | 29 | ||||
| -rw-r--r-- | libFDK/src/FDK_core.cpp | 2 |
2 files changed, 30 insertions, 1 deletions
diff --git a/libFDK/include/fixpoint_math.h b/libFDK/include/fixpoint_math.h index 88e2f09..0d50f0a 100644 --- a/libFDK/include/fixpoint_math.h +++ b/libFDK/include/fixpoint_math.h @@ -94,6 +94,35 @@ amm-info@iis.fraunhofer.de #include "common_fix.h" +#if !defined(FUNCTION_fIsLessThan) +/** + * \brief Compares two fixpoint values incl. scaling. + * \param a_m mantissa of the first input value. + * \param a_e exponent of the first input value. + * \param b_m mantissa of the second input value. + * \param b_e exponent of the second input value. + * \return non-zero if (a_m*2^a_e) < (b_m*2^b_e), 0 otherwise + */ +FDK_INLINE INT fIsLessThan(FIXP_DBL a_m, INT a_e, FIXP_DBL b_m, INT b_e) +{ + if (a_e > b_e) { + return (b_m >> fMin(a_e-b_e, DFRACT_BITS-1) > a_m); + } else { + return (a_m >> fMin(b_e-a_e, DFRACT_BITS-1) < b_m); + } +} + +FDK_INLINE INT fIsLessThan(FIXP_SGL a_m, INT a_e, FIXP_SGL b_m, INT b_e) +{ + if (a_e > b_e) { + return (b_m >> fMin(a_e-b_e, FRACT_BITS-1) > a_m); + } else { + return (a_m >> fMin(b_e-a_e, FRACT_BITS-1) < b_m); + } +} +#endif + + #define LD_DATA_SCALING (64.0f) #define LD_DATA_SHIFT 6 /* pow(2, LD_DATA_SHIFT) = LD_DATA_SCALING */ diff --git a/libFDK/src/FDK_core.cpp b/libFDK/src/FDK_core.cpp index 8fa5596..f4b510d 100644 --- a/libFDK/src/FDK_core.cpp +++ b/libFDK/src/FDK_core.cpp @@ -93,7 +93,7 @@ amm-info@iis.fraunhofer.de /* FDK tools library info */ #define FDK_TOOLS_LIB_VL0 2 #define FDK_TOOLS_LIB_VL1 3 -#define FDK_TOOLS_LIB_VL2 4 +#define FDK_TOOLS_LIB_VL2 5 #define FDK_TOOLS_LIB_TITLE "FDK Tools" #ifdef __ANDROID__ #define FDK_TOOLS_LIB_BUILD_DATE "" |