move normal variants to TH/THC

Author: killeent

generic/THTensorRandom.c

@@ -55,6 +55,29 @@ void THTensor_(normal)(THTensor *self, THGenerator *_generator, double mean, dou
   TH_TENSOR_APPLY(real, self, *self_data = (real)THRandom_normal(_generator, mean, stdv););
 }
 
+void THTensor_(normal_means)(THTensor *self, THGenerator *gen, THTensor *means, double stddev)
+{
+  THTensor_(resizeAs)(self, means);
+  THTensor_(normal)(self, gen, 0, stddev);
+  THTensor_(cadd)(self, self, 1, means);
+}
+
+void THTensor_(normal_stddevs)(THTensor *self, THGenerator *gen, double mean, THTensor *stddevs)
+{
+  THTensor_(resizeAs)(self, stddevs);
+  THTensor_(normal)(self, gen, 0, 1);
+  THTensor_(cmul)(self, self, stddevs);
+  THTensor_(add)(self, self, mean);
+}
+
+void THTensor_(normal_means_stddevs)(THTensor *self, THGenerator *gen, THTensor *means, THTensor *stddevs)
+{
+  THTensor_(resizeAs)(self, means);
+  THTensor_(normal)(self, gen, 0, 1);
+  THTensor_(cmul)(self, self, stddevs);
+  THTensor_(cadd)(self, self, 1, means);
+}
+
 void THTensor_(exponential)(THTensor *self, THGenerator *_generator, double lambda)
 {
   TH_TENSOR_APPLY(real, self, *self_data = (real)THRandom_exponential(_generator, lambda););

generic/THTensorRandom.h

@@ -11,6 +11,9 @@ TH_API void THTensor_(bernoulli_DoubleTensor)(THTensor *self, THGenerator *_gene
 #if defined(TH_REAL_IS_FLOAT) || defined(TH_REAL_IS_DOUBLE)
 TH_API void THTensor_(uniform)(THTensor *self, THGenerator *_generator, double a, double b);
 TH_API void THTensor_(normal)(THTensor *self, THGenerator *_generator, double mean, double stdv);
+TH_API void THTensor_(normal_means)(THTensor *self, THGenerator *gen, THTensor *means, double stddev);
+TH_API void THTensor_(normal_stddevs)(THTensor *self, THGenerator *gen, double mean, THTensor *stddevs);
+TH_API void THTensor_(normal_means_stddevs)(THTensor *self, THGenerator *gen, THTensor *means, THTensor *stddevs);
 TH_API void THTensor_(exponential)(THTensor *self, THGenerator *_generator, double lambda);
 TH_API void THTensor_(cauchy)(THTensor *self, THGenerator *_generator, double median, double sigma);
 TH_API void THTensor_(logNormal)(THTensor *self, THGenerator *_generator, double mean, double stdv);