diff --git a/man3/fma.3 b/man3/fma.3
index 49e8cf846..3b7c24052 100644
--- a/man3/fma.3
+++ b/man3/fma.3
@@ -1,5 +1,7 @@
 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
 .\" Distributed under GPL, 2002-07-27 Walter Harms
+.\" Modified 2004-11-15, Added further text on FLT_ROUNDS
+.\" 	as suggested by AEB and Fabian Kreutz
 .\"
 .TH FMA 3  2002-07-27 "" "Linux Programmer's Manual"
 .SH NAME
@@ -23,6 +25,21 @@ function computes
 .IR x " * " y " + " z .
 The result is rounded according to the
 rounding mode determined by the value of FLT_ROUNDS.
+FLT_ROUNDS indicates the implementation-defined rounding
+behaviour for floating-point addition,
+and has one of the following values:
+.IP \-1
+The rounding mode is not determinable.
+.IP 0
+Roundng is towards 0.
+.IP 1
+Rounding is towards nearest number.
+.IP 2
+Rounding is towards positive infinity.
+.IP 3
+Rounding is towards negative infinity.
+.PP
+Other values represent machine-dependent, non-standard rounding modes.
 .SH "CONFORMING TO"
 C99
 .SH "SEE ALSO"