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-rw-r--r--internal.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index b02f926feb..5a89da41d6 100644
--- a/internal.h
+++ b/internal.h
@@ -635,7 +635,9 @@ VALUE rb_math_hypot(VALUE, VALUE);
VALUE rb_math_log(int argc, VALUE *argv);
VALUE rb_math_sin(VALUE);
VALUE rb_math_sinh(VALUE);
+#if 0
VALUE rb_math_sqrt(VALUE);
+#endif
/* newline.c */
void Init_newline(void);