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-rw-r--r--newlib/libc/stdlib/__ten_mu.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/newlib/libc/stdlib/__ten_mu.c b/newlib/libc/stdlib/__ten_mu.c
new file mode 100644
index 00000000000..439c226e17d
--- /dev/null
+++ b/newlib/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 */
+}