1 files changed, 19 insertions, 0 deletions
diff --git a/bf.c b/bf.c
new file mode 100644
index 0000000..ddec8f5
--- /dev/null
+++ b/bf.c
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#define S (1<<16)
+#define I a[1]
+#define D a[0]
+#define C case
+#define B break
+static char d[S], p[S];
+int main(int i, char *a[]) {
+ fread(p, 1, S, fopen(I, "r"));
+ for (D = d, I = p; I < p + S; I++) {
+  switch (i = *I) {
+  C '[': C ']': for (i = '\\' - *I; i < 0 ? *D : !*D; i += *(I += i > 0 ? 1 : -1) == '[' ? 1 : *I == ']' ? -1 : 0); B;
+  C '+': C '-': *D -= i - ','; B;
+  C '<': C '>': D += i - '='; B;
+  C ',': *D = getchar(); B;
+  C '.': putchar(*D); B;
+  }
+ }
+}