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-rw-r--r--libguile/eval.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/libguile/eval.h b/libguile/eval.h
index 0b163f77f..25e12e36e 100644
--- a/libguile/eval.h
+++ b/libguile/eval.h
@@ -81,9 +81,10 @@ extern SCM scm_eval_options_interface (SCM setting);
#define SCM_ICDR (0x00080000L)
#define SCM_IFRINC (0x00000100L)
#define SCM_IDSTMSK (-SCM_IDINC)
-#define SCM_IFRAME(n) ((int)((SCM_ICDR-SCM_IFRINC)>>8) & ((int)(n)>>8))
-#define SCM_IDIST(n) (((unsigned long)(n))>>20)
-#define SCM_ICDRP(n) (SCM_ICDR & SCM_UNPACK(n))
+#define SCM_IFRAME(n) ((int)((SCM_ICDR-SCM_IFRINC)>>8) \
+ & (SCM_UNPACK (n) >> 8))
+#define SCM_IDIST(n) (SCM_UNPACK (n) >> 20)
+#define SCM_ICDRP(n) (SCM_ICDR & SCM_UNPACK (n))