jacobian

commit df40d575343e8f46956b57f319ad16981a37e785
parent 359a7399eb9b18bd8f0a4786abf58a7754a3e569
Author: David Freifeld <freifeld.david@gmail.com>
Date:   Mon, 28 Sep 2020 12:11:03 -0700

Tweaks to buffer

Diffstat:
M
src/bpnn.hpp
 | 
2
+-
M
src/data.cpp
 | 
13
++++++-------

2 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/src/bpnn.hpp b/src/bpnn.hpp
@@ -46,7 +46,7 @@ public:
     int data;
     int val_data;
     int instances;
-    float buf[BUFFER_SIZE];
+    std::byte buf[BUFFER_SIZE];
     int val_instances;
     int test_instances;
     Eigen::MatrixXf numerical_grad(int i, float epsilon);
diff --git a/src/data.cpp b/src/data.cpp
@@ -40,22 +40,21 @@ int Network::next_batch(int fd)
 {
     Expects(fd > 0); // File descriptor must be valid.
     uintmax_t lines = 0;
-    read(fd, buf, 4);
-    printf("%x\n", *buf);
     while(size_t bytes_read = read(fd, buf, BUFFER_SIZE)) {
+        printf("hi\n");
         if (!bytes_read) {
             printf("hit end of file\n");
             break;
         }
-        for(float* p = buf; p < buf+BUFFER_SIZE;) {
+        for(std::byte* p = buf; p < buf+BUFFER_SIZE;) {
             if (lines >= 10) return 0;
             for (int i=0; i<layers[0].contents->cols(); ++i) {
-                printf("%llx %f\n", *((int*)p), *p);
-                (*layers[0].contents)(lines,i) = *p;
+                printf("%llx %f\n", *((int*)p), *(reinterpret_cast<float*>(p)));
+                (*layers[0].contents)(lines,i) = *(reinterpret_cast<float*>(p));
                 p += sizeof(float);
             }
-            printf("%f\n", *p);
-            (*labels)(lines,0) = *p;
+            printf("%f\n", *(reinterpret_cast<float*>(p)));
+            (*labels)(lines,0) = *(reinterpret_cast<float*>(p));
             p += sizeof(float);
             ++lines;
         }