1 files changed, 27 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/i386/ipow.S b/mdk-stage1/dietlibc/i386/ipow.S
new file mode 100644
index 000000000..cca6a0ce1
--- /dev/null
+++ b/mdk-stage1/dietlibc/i386/ipow.S
@@ -0,0 +1,27 @@
+#
+# This is not standard, but often you only need such this function
+# which is much shorter than the generic pow() function.
+#
+#   double  ipow ( double mant, int expo );
+#
+
+.text
+.global ipow
+.type   ipow,@function
+
+ipow:   fld1
+        movl    12(%esp),%ecx
+        fldl    4(%esp)
+        and     %ecx,%ecx
+        jns     .Lstart
+        negl    %ecx
+        fdivr   %st(1),%st(0)
+        jmp     .Lstart
+
+.Lnext: fmul    %st(0),%st(0)
+.Lstart:shrl    %ecx
+        jnc     .Lnomul
+        fmul    %st(0),%st(1)
+.Lnomul:jnz     .Lnext
+        fcomp
+        ret