Revert "interactive"

This reverts commit be0f1f3247.

Makefile

@@ -25,7 +25,6 @@ CFLAGS += -flto
 
 LDFLAGS =
 LDFLAGS += -lm
-LDFLAGS += -lSDL2
 
 ifdef ComSpec
 	RM = del /F /Q

test.c

@@ -1,19 +1,8 @@
 #include "Tinn.h"
 #include <stdio.h>
-#include <stdbool.h>
 #include <time.h>
-#include <float.h>
 #include <string.h>
 #include <stdlib.h>
-#include <SDL2/SDL.h>
-
-typedef struct
-{
-    bool down;
-    int x;
-    int y;
-}
-Input;
 
 typedef struct
 {
@@ -136,93 +125,6 @@ static Data build(const char* path, const int nips, const int nops)
     return data;
 }
 
-void dprint(const float* const p, const int size)
-{
-    for(int i = 0; i < size; i++)
-        printf("%f ", (double) p[i]);
-    printf("\n");
-}
-
-typedef struct
-{
-    int i;
-    float val;
-}
-Index;
-
-Index ixmax(const float* const p, const int size)
-{
-    Index ix;
-    ix.val = -FLT_MAX;
-    for(int i = 0; i < size; i++)
-        if(p[i] > ix.val)
-            ix.val = p[ix.i = i];
-    return ix;
-}
-
-void dploop(const Tinn tinn, const Data data)
-{
-    SDL_Renderer* renderer;
-    SDL_Window* window;
-    #define W 16
-    #define H 16
-    #define S 20
-    const int xres = W * S;
-    const int yres = H * S;
-    SDL_CreateWindowAndRenderer(xres, yres, 0, &window, &renderer);
-    static float digit[W * H];
-    Input input = { false, 0, 0 };
-    for(SDL_Event e; true; SDL_PollEvent(&e))
-    {
-        if(e.type == SDL_QUIT)
-            exit(1);
-        const int button = SDL_GetMouseState(&input.x, &input.y);
-        // Draw digit.
-        if(button)
-        {
-            const int xx = input.x / S;
-            const int yy = input.y / S;
-            const int w = 2;
-            for(int i = 0; i < w; i++)
-            for(int j = 0; j < w; j++)
-                digit[(xx + i) + W * (yy + j)] = 1.0f;
-            input.down = true;
-        }
-        // Predict.
-        else
-        {
-            if(input.down)
-            {
-                const float* const pred = xpredict(tinn, digit);
-                dprint(pred, data.nops);
-                const Index ix = ixmax(pred, data.nops);
-                if(ix.val > 0.9f)
-                    printf("%d\n", ix.i);
-                else
-                    printf("I do not recognize that digit\n");
-                memset((void*) digit, 0, sizeof(digit));
-            }
-            input.down = false;
-        }
-        // Draw digit to screen.
-        for(int x = 0; x < xres; x++)
-        for(int y = 0; y < yres; y++)
-        {
-            const int xx = x / S;
-            const int yy = y / S;
-            digit[xx + W * yy] == 1.0f ?
-                SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF):
-                SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0xFF);
-            SDL_RenderDrawPoint(renderer, x, y);
-        }
-        SDL_RenderPresent(renderer);
-        SDL_Delay(15);
-    }
-    #undef W
-    #undef H
-    #undef S
-}
-
 int main()
 {
     // Tinn does not seed the random number generator.
@@ -242,7 +144,7 @@ int main()
     const Data data = build("semeion.data", nips, nops);
     // Train, baby, train.
     const Tinn tinn = xtbuild(nips, nhid, nops);
-    for(int i = 0; i < 200; i++)
+    for(int i = 0; i < 100; i++)
     {
         shuffle(data);
         float error = 0.0f;
@@ -261,10 +163,14 @@ int main()
     // This is how you load the neural network from disk.
     const Tinn loaded = xtload("saved.tinn");
     // Now we do a prediction with the neural network we loaded from disk.
-    // SDL will create a window so that you can draw digits.
-    // Enter the draw and predict loop:
-    dploop(loaded, data);
-    // All done. Let's clean up
+    // Ideally, we would also load a testing set to make the prediction with,
+    // but for the sake of brevity here we just reuse the training set from earlier.
+    const float* const in = data.in[0];
+    const float* const tg = data.tg[0];
+    const float* const pd = xpredict(loaded, in);
+    for(int i = 0; i < data.nops; i++) { printf("%f ", (double) tg[i]); } printf("\n");
+    for(int i = 0; i < data.nops; i++) { printf("%f ", (double) pd[i]); } printf("\n");
+    // All done. Let's clean up.
     xtfree(loaded);
     dfree(data);
     return 0;