frexp version from m68k, both are IEEE so should be fine.

Ok what other routines are missing at this point I wonder,
Do we have a standards compilance test? If so, it really needs to
be run on this port.

diff --git a/lib/libc/arch/powerpc/gen/Makefile.inc b/lib/libc/arch/powerpc/gen/Makefile.inc
index 677172e..42c368e 100644 (file)
--- a/lib/libc/arch/powerpc/gen/Makefile.inc
+++ b/lib/libc/arch/powerpc/gen/Makefile.inc
@@ -1,3 +1,3 @@
 SRCS+= isinf.c infinity.c setjmp.S sigsetjmp.S flt_rounds.c modf.c
-SRCS+= ldexp.c fabs.c
+SRCS+= ldexp.c fabs.c frexp.c
 SRCS+= fp.c

diff --git a/lib/libc/arch/powerpc/gen/frexp.c b/lib/libc/arch/powerpc/gen/frexp.c
new file mode 100644 (file)
index 0000000..213524c
--- /dev/null
+++ b/lib/libc/arch/powerpc/gen/frexp.c
@@ -0,0 +1,65 @@
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char rcsid[] = "$OpenBSD: frexp.c,v 1.1 1997/01/17 21:39:20 rahnds Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <math.h>
+
+double
+frexp(value, eptr)
+       double value;
+       int *eptr;
+{
+       union {
+                double v;
+                struct {
+                        u_int  u_sign :  1;
+                       u_int   u_exp : 11;
+                       u_int u_mant1 : 20;
+                       u_int u_mant2 : 32;
+                } s;
+        } u;
+
+       if (value) {
+               u.v = value;
+               *eptr = u.s.u_exp - 1022;
+               u.s.u_exp = 1022;
+               return(u.v);
+       } else {
+               *eptr = 0;
+               return((double)0);
+       }
+}