patch-2.3.16 linux/arch/ppc/math-emu/fsel.c

• Lines: 42
• Date: Tue Aug 31 11:36:43 1999
• Orig file: v2.3.15/linux/arch/ppc/math-emu/fsel.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.15/linux/arch/ppc/math-emu/fsel.c linux/arch/ppc/math-emu/fsel.c
@@ -0,0 +1,41 @@
+/* $Id: fsel.c,v 1.1 1999/08/23 18:59:59 cort Exp $
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "soft-fp.h"
+#include "double.h"
+
+int
+fsel(u32 *frD, void *frA, u32 *frB, u32 *frC)
+{
+	FP_DECL_D(A);
+
+#ifdef DEBUG
+	printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frA, frB, frC);
+#endif
+
+	__FP_UNPACK_D(A, frA);
+
+#ifdef DEBUG
+	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
+	printk("B: %08x %08x\n", frB[0], frB[1]);
+	printk("C: %08x %08x\n", frC[0], frC[1]);
+#endif
+
+	if (A_c == FP_CLS_NAN || (A_c != FP_CLS_ZERO && A_s)) {
+		frD[0] = frB[0];
+		frD[1] = frB[1];
+	} else {
+		frD[0] = frC[0];
+		frD[1] = frC[1];
+	}
+
+#ifdef DEBUG
+	printk("D: %08x.%08x\n", frD[0], frD[1]);
+#endif
+
+	return 0;
+}