1 files changed, 58 insertions, 0 deletions
diff --git a/recipes-demo/de10-nano-fftsw-apps/files/real_short_to_ne10cpx_long.c b/recipes-demo/de10-nano-fftsw-apps/files/real_short_to_ne10cpx_long.c
new file mode 100644
index 0000000..cc58d26
--- /dev/null
+++ b/recipes-demo/de10-nano-fftsw-apps/files/real_short_to_ne10cpx_long.c
@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <limits.h>
+#include <error.h>
+#include <errno.h>
+
+#include "NE10.h"
+
+#define BUFFER_SIZE	(512)
+static short input_buffer[BUFFER_SIZE];
+static ne10_fft_cpx_int32_t output_buffer[BUFFER_SIZE];
+
+int main(void) {
+
+	int i;
+	int read_result;
+	int write_result;
+	int read_object_count;
+	
+	read_result = read(STDIN_FILENO, input_buffer, sizeof(input_buffer));
+	if (read_result < 0) {
+		error(1, errno, "reading from stdin");
+	}
+	
+	read_object_count = read_result / (int)sizeof(short);
+	if (read_result != (read_object_count * (int)sizeof(short))) {
+		error(1, 0, "did not read a multiple of input buffer type");
+	}
+	
+	while (read_object_count > 0) {
+		for (i = 0 ; i < read_object_count ; i++) {
+			output_buffer[i].r = input_buffer[i];
+			output_buffer[i].i = 0;
+		}
+
+		write_result = write(STDOUT_FILENO, &output_buffer, (read_object_count * sizeof(ne10_fft_cpx_int32_t)));
+		if (write_result < 0) {
+			error(1, errno, "writing to stdout");
+		}
+	
+		if (write_result != (read_object_count * (int)sizeof(ne10_fft_cpx_int32_t))) {
+			error(1, 0, "failed to write %d bytes to stdout, only wrote %d bytes", (read_object_count * sizeof(ne10_fft_cpx_int32_t)), write_result);
+		}
+
+		read_result = read(STDIN_FILENO, input_buffer, sizeof(input_buffer));
+		if (read_result < 0) {
+			error(1, errno, "reading from stdin");
+		}
+
+		read_object_count = read_result / (int)sizeof(short);
+		if (read_result != (read_object_count * (int)sizeof(short))) {
+			error(1, 0, "did not read a multiple of input buffer type");
+		}
+	}
+	
+	return 0;
+}
+