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-rw-r--r--math.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/math.c b/math.c
index 25914ec..51caf35 100644
--- a/math.c
+++ b/math.c
@@ -661,7 +661,8 @@ math_gamma(VALUE obj, VALUE x)
/* fact(21) */ 51090942171709440000.0,
/* fact(22) */ 1124000727777607680000.0,
/* fact(23)=25852016738884976640000 needs 56bit mantissa which is
- * impossible to represent exactly in IEEE 754 double. */
+ * impossible to represent exactly in IEEE 754 double which have
+ * 53bit mantissa. */
};
double d0, d;
double intpart, fracpart;