From 9655379852fdbf3a0797035fc30a4060a2b191cf Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Sun, 4 Mar 2012 23:01:33 +0100
Subject: remainder, remainderf, remainderl: Fix computation for large
 quotients.

* lib/remainder.c: Completely rewritten.
* lib/remainderf.c (remainderf): Use implementation of remainder.c with
USE_FLOAT.
* lib/remainderl.c (remainderl): Use implementation of remainder.c with
USE_LONG_DOUBLE.
* modules/remainder (Depends-on): Add isfinite, signbit, fabs, fmod,
isnand, isinf. Remove round, fma.
* modules/remainderf (Files): Add lib/remainder.c.
(Depends-on): Add isfinite, signbit, fabsf, fmodf, isnanf, isinf.
Remove roundf, fmaf.
* modules/remainderl (Files): Add lib/remainder.c.
(Depends-on): Add float, isfinite, signbit, fabsl, fmodl, isnanl,
isinf. Remove roundl, fmal.
* m4/remainder.m4 (gl_FUNC_REMAINDER): Update computation of
REMAINDER_LIBM.
* m4/remainderf.m4 (gl_FUNC_REMAINDERF): Update computation of
REMAINDERF_LIBM.
* m4/remainderl.m4 (gl_FUNC_REMAINDERL): Update computation of
REMAINDERL_LIBM.
---
 m4/remainder.m4 | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

(limited to 'm4/remainder.m4')

diff --git a/m4/remainder.m4 b/m4/remainder.m4
index 855c1bb3f2..f788a20fc7 100644
--- a/m4/remainder.m4
+++ b/m4/remainder.m4
@@ -1,4 +1,4 @@
-# remainder.m4 serial 2
+# remainder.m4 serial 3
 dnl Copyright (C) 2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -104,18 +104,24 @@ int main (int argc, char *argv[])
   fi
   if test $HAVE_REMAINDER = 0 || test $REPLACE_REMAINDER = 1; then
     dnl Find libraries needed to link lib/remainder.c.
-    AC_REQUIRE([gl_FUNC_ROUND])
-    AC_REQUIRE([gl_FUNC_FMA])
+    AC_REQUIRE([gl_FUNC_FABS])
+    AC_REQUIRE([gl_FUNC_FMOD])
+    AC_REQUIRE([gl_FUNC_ISNAND])
     REMAINDER_LIBM=
-    dnl Append $ROUND_LIBM to REMAINDER_LIBM, avoiding gratuitous duplicates.
+    dnl Append $FABS_LIBM to REMAINDER_LIBM, avoiding gratuitous duplicates.
     case " $REMAINDER_LIBM " in
-      *" $ROUND_LIBM "*) ;;
-      *) REMAINDER_LIBM="$REMAINDER_LIBM $ROUND_LIBM" ;;
+      *" $FABS_LIBM "*) ;;
+      *) REMAINDER_LIBM="$REMAINDER_LIBM $FABS_LIBM" ;;
     esac
-    dnl Append $FMA_LIBM to REMAINDER_LIBM, avoiding gratuitous duplicates.
+    dnl Append $FMOD_LIBM to REMAINDER_LIBM, avoiding gratuitous duplicates.
     case " $REMAINDER_LIBM " in
-      *" $FMA_LIBM "*) ;;
-      *) REMAINDER_LIBM="$REMAINDER_LIBM $FMA_LIBM" ;;
+      *" $FMOD_LIBM "*) ;;
+      *) REMAINDER_LIBM="$REMAINDER_LIBM $FMOD_LIBM" ;;
+    esac
+    dnl Append $ISNAND_LIBM to REMAINDER_LIBM, avoiding gratuitous duplicates.
+    case " $REMAINDER_LIBM " in
+      *" $ISNAND_LIBM "*) ;;
+      *) REMAINDER_LIBM="$REMAINDER_LIBM $ISNAND_LIBM" ;;
     esac
   fi
   AC_SUBST([REMAINDER_LIBM])
-- 
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