add libc building to agbcc.

1 files changed, 23 insertions, 0 deletions

diff --git a/libc/stdlib/__ten_mu.c b/libc/stdlib/__ten_mu.c
new file mode 100644
index 0000000..439c226
--- /dev/null
+++ b/libc/stdlib/__ten_mu.c
@@ -0,0 +1,23 @@
+/*
+ * [atw] multiply 64 bit accumulator by 10 and add digit.
+ * The KA/CA way to do this should be to use
+ * a 64-bit integer internally and use "adjust" to
+ * convert it to float at the end of processing.
+ */
+
+#include <_ansi.h>
+
+int
+_DEFUN (__ten_mul, (acc, digit),
+	double *acc _AND
+	int digit)
+{
+  /*
+   * [atw] Crude, but effective (at least on a KB)...
+   */
+
+  *acc *= 10;
+  *acc += digit;
+
+  return 0;			/* no overflow */
+}