--- ../../../libc/manual/arith.texi 2007-11-19 12:00:50.000000000 +1100
+++ arith.texi 2007-11-19 03:01:41.000000000 +1100
@@ -1546,6 +1546,29 @@
This function is another name for @code{drem}.
@end deftypefun
+@comment math.h
+@comment ISO_C99
+@deftypefun double remquo (double @var{numerator}, double @var{denominator}, int @var{*quo})
+@comment math.h
+@comment ISO_C99
+@deftypefunx float remquof (float @var{numerator}, float @var{denominator}, int @var{*quo})
+@comment math.h
+@comment ISO_C99
+@deftypefunx {long double} remquol (long double @var{numerator}, long double @var{denominator}, int @var{*quo})
+
+These functions compute the remainder and part of the quotient upon division
+of @var{numerator} by @var{denominator}. A few bits of the quotient are stored
+via the @var{quo} pointer. The remainder is returned as function value.
+
+The value of the remainder is the same as that computed by the @code{remainder}
+function above. The value stored via the @var{quo} pointer has the sign of
+@var{numerator}/@var{denominator} and agrees with the quotient in at least the
+low order 3 bits.
+
+For example, @code{remquo(29.0,3.0)} returns @code{-1.0} and might store @code{2}.
+Note that the actual quotient might not fit in an integer.
+@end deftypefun
+
@node FP Bit Twiddling
@subsection Setting and modifying single bits of FP values
@cindex FP arithmetic