Gaudi Framework, version v20r4
Generated: 8 Jan 2009
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Generated: 8 Jan 2009 |
00001 // $Id: cbrt.h,v 1.1 2007/07/27 12:59:52 marcocle Exp $ 00002 #ifndef GAUDIKERNEL_CBRT_H 00003 #define GAUDIKERNEL_CBRT_H 00004 00005 // ============================================================================ 00006 // Include files 00007 // ============================================================================ 00008 00009 #include <cmath> 00010 00020 // double cbrt(double) is a gcc built-in 00021 #ifndef __GNUC__ 00022 inline double cbrt( double __x ){ 00023 return ::pow( __x, static_cast<double>(1.0/3.0) ); 00024 } 00025 #endif 00026 00027 // we need cbrtf for floats 00028 inline float cbrt( float __x ) { 00029 #ifdef __GNUC__ 00030 return ::cbrtf( __x ); 00031 #else 00032 return ::pow( __x, static_cast<float>(1.0/3.0) ); 00033 #endif 00034 } 00035 00036 // we need cbrtl for long doubles 00037 inline long double cbrt( long double __x ) { 00038 #ifdef __GNUC__ 00039 return ::cbrtl( __x ); 00040 #else 00041 return ::pow( __x, static_cast<long double>(1.0/3.0) ); 00042 #endif 00043 } 00044 00045 // use cbrt(double) for integers 00046 #define cbrt_for_int_type(t) \ 00047 inline double cbrt( t __x ) { return cbrt ( static_cast<double>(__x) ); } 00048 00049 cbrt_for_int_type(int) 00050 cbrt_for_int_type(long) 00051 cbrt_for_int_type(long long) 00052 cbrt_for_int_type(unsigned int) 00053 cbrt_for_int_type(unsigned long) 00054 cbrt_for_int_type(unsigned long long) 00055 00056 #undef cbrt_for_int_type 00057 00058 #endif 00059 // ============================================================================