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authorDmitry Torokhov <dtor_core@ameritech.net>2006-04-02 00:08:05 -0500
committerDmitry Torokhov <dtor_core@ameritech.net>2006-04-02 00:08:05 -0500
commit95d465fd750897ab32462a6702fbfe1b122cbbc0 (patch)
tree65c38b2f11c51bb6932e44dd6c92f15b0091abfe /arch/powerpc/math-emu/fmadds.c
parent642fde17dceceb56c7ba2762733ac688666ae657 (diff)
parent683aa4012f53b2ada0f430487e05d37b0d94e90a (diff)
Manual merge with Linus.
Conflicts: arch/powerpc/kernel/setup-common.c drivers/input/keyboard/hil_kbd.c drivers/input/mouse/hil_ptr.c
Diffstat (limited to 'arch/powerpc/math-emu/fmadds.c')
-rw-r--r--arch/powerpc/math-emu/fmadds.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/fmadds.c b/arch/powerpc/math-emu/fmadds.c
new file mode 100644
index 00000000000..0f70bba9445
--- /dev/null
+++ b/arch/powerpc/math-emu/fmadds.c
@@ -0,0 +1,49 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "soft-fp.h"
+#include "double.h"
+#include "single.h"
+
+int
+fmadds(void *frD, void *frA, void *frB, void *frC)
+{
+ FP_DECL_D(R);
+ FP_DECL_D(A);
+ FP_DECL_D(B);
+ FP_DECL_D(C);
+ FP_DECL_D(T);
+ int ret = 0;
+
+#ifdef DEBUG
+ printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frA, frB, frC);
+#endif
+
+ __FP_UNPACK_D(A, frA);
+ __FP_UNPACK_D(B, frB);
+ __FP_UNPACK_D(C, frC);
+
+#ifdef DEBUG
+ printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
+ printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
+ printk("C: %ld %lu %lu %ld (%ld)\n", C_s, C_f1, C_f0, C_e, C_c);
+#endif
+
+ if ((A_c == FP_CLS_INF && C_c == FP_CLS_ZERO) ||
+ (A_c == FP_CLS_ZERO && C_c == FP_CLS_INF))
+ ret |= EFLAG_VXIMZ;
+
+ FP_MUL_D(T, A, C);
+
+ if (T_s != B_s && T_c == FP_CLS_INF && B_c == FP_CLS_INF)
+ ret |= EFLAG_VXISI;
+
+ FP_ADD_D(R, T, B);
+
+#ifdef DEBUG
+ printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
+#endif
+
+ return (ret | __FP_PACK_DS(frD, R));
+}