diff options
| author | yangzhang <yangzhang@multicorewareinc.com> | 2013-12-24 13:14:56 +0800 |
|---|---|---|
| committer | I-Jui (Ray) Sung <ray@multicorewareinc.com> | 2013-12-30 15:05:25 -0600 |
| commit | 60ae598d537c14283109e1c6de22ec43a0147bcf (patch) | |
| tree | dc8022cd76c43f2f3d3eb2927325f61ce94ca036 /sc/source/core/opencl | |
| parent | b8bbde02a51a952ee268ed818d6201d6b5c57ec6 (diff) | |
GPU Calc: Optimized RANDOM
AMLOEXT-260
Change-Id: I3fd0a857a476a34401cfa522f828bed3bb79c9e2
Signed-off-by: haochen <haochen@multicorewareinc.com>
Signed-off-by: Wei Wei <weiwei@multicorewareinc.com>
Signed-off-by: I-Jui (Ray) Sung <ray@multicorewareinc.com>
Diffstat (limited to 'sc/source/core/opencl')
| -rw-r--r-- | sc/source/core/opencl/formulagroupcl.cxx | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/sc/source/core/opencl/formulagroupcl.cxx b/sc/source/core/opencl/formulagroupcl.cxx index 9c16ab77f13b..6045b251c032 100644 --- a/sc/source/core/opencl/formulagroupcl.cxx +++ b/sc/source/core/opencl/formulagroupcl.cxx @@ -291,10 +291,7 @@ public: } virtual void GenDeclRef(std::stringstream &ss) const { - double d; - srand((unsigned)time(NULL)); - d=((double)rand())/RAND_MAX; - ss << d; + ss << mSymName; } virtual void GenSlidingWindowDecl(std::stringstream &ss) const { @@ -302,7 +299,27 @@ public: } virtual std::string GenSlidingWindowDeclRef(bool=false) const { - return mSymName; + return mSymName + "_Random()"; + } + void GenSlidingWindowFunction(std::stringstream &ss) + { + ss << "\ndouble " << mSymName; + ss << "_Random ()\n{\n"; + ss << " int i, gid0=get_global_id(0);;\n"; + ss << " double tmp = 0;\n"; + ss << " double M = 2147483647;\n"; + ss << " double Lamda = 32719;\n"; + ss << " double f;\n"; + ss << " f = gid0 + 1;\n"; + ss << " int k;\n"; + ss << " for(i = 1;i <= 100; ++i){\n"; + ss << " f = Lamda * f;\n"; + ss << " k = (int)(f * pow(M,-1.0));\n"; + ss << " f = f - M * k;\n"; + ss << " }\n"; + ss << " tmp = f * pow(M,-1.0);\n"; + ss << " return tmp;\n"; + ss << "}"; } virtual size_t GetWindowSize(void) const { |