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-rw-r--r--libguile/scmsigs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/libguile/scmsigs.h b/libguile/scmsigs.h
index 9cce2b67b..d90d271cb 100644
--- a/libguile/scmsigs.h
+++ b/libguile/scmsigs.h
@@ -52,6 +52,7 @@ extern SCM scm_restore_signals SCM_P ((void));
extern SCM scm_alarm SCM_P ((SCM i));
extern SCM scm_pause SCM_P ((void));
extern SCM scm_sleep SCM_P ((SCM i));
+extern SCM scm_usleep SCM_P ((SCM i));
extern SCM scm_raise SCM_P ((SCM sig));
extern void scm_init_scmsigs SCM_P ((void));