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authorIngo Molnar <mingo@elte.hu>2008-01-30 13:30:11 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:30:11 +0100
commit3d0d14f983b55a570b976976284df4c434af3223 (patch)
tree864f11c0ce5ee1e15acdd196018b79d0d0e2685d /arch/x86/math-emu/reg_mul.c
parenta4ec1effce83796209a0258602b0cf50026d86f2 (diff)
x86: lindent arch/i386/math-emu
lindent these files: errors lines of code errors/KLOC arch/x86/math-emu/ 2236 9424 237.2 arch/x86/math-emu/ 128 8706 14.7 no other changes. No code changed: text data bss dec hex filename 5589802 612739 3833856 10036397 9924ad vmlinux.before 5589802 612739 3833856 10036397 9924ad vmlinux.after the intent of this patch is to ease the automated tracking of kernel code quality - it's just much easier for us to maintain it if every file in arch/x86 is supposed to be clean. NOTE: it is a known problem of lindent that it causes some style damage of its own, but it's a safe tool (well, except for the gcc array range initializers extension), so we did the bulk of the changes via lindent, and did the manual fixups in a followup patch. the resulting math-emu code has been tested by Thomas Gleixner on a real 386 DX CPU as well, and it works fine. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/math-emu/reg_mul.c')
-rw-r--r--arch/x86/math-emu/reg_mul.c163
1 files changed, 73 insertions, 90 deletions
diff --git a/arch/x86/math-emu/reg_mul.c b/arch/x86/math-emu/reg_mul.c
index 40f50b61bc6..36c37f71f71 100644
--- a/arch/x86/math-emu/reg_mul.c
+++ b/arch/x86/math-emu/reg_mul.c
@@ -20,7 +20,6 @@
#include "reg_constant.h"
#include "fpu_system.h"
-
/*
Multiply two registers to give a register result.
The sources are st(deststnr) and (b,tagb,signb).
@@ -29,104 +28,88 @@
/* This routine must be called with non-empty source registers */
int FPU_mul(FPU_REG const *b, u_char tagb, int deststnr, int control_w)
{
- FPU_REG *a = &st(deststnr);
- FPU_REG *dest = a;
- u_char taga = FPU_gettagi(deststnr);
- u_char saved_sign = getsign(dest);
- u_char sign = (getsign(a) ^ getsign(b));
- int tag;
-
+ FPU_REG *a = &st(deststnr);
+ FPU_REG *dest = a;
+ u_char taga = FPU_gettagi(deststnr);
+ u_char saved_sign = getsign(dest);
+ u_char sign = (getsign(a) ^ getsign(b));
+ int tag;
- if ( !(taga | tagb) )
- {
- /* Both regs Valid, this should be the most common case. */
+ if (!(taga | tagb)) {
+ /* Both regs Valid, this should be the most common case. */
- tag = FPU_u_mul(a, b, dest, control_w, sign, exponent(a) + exponent(b));
- if ( tag < 0 )
- {
- setsign(dest, saved_sign);
- return tag;
+ tag =
+ FPU_u_mul(a, b, dest, control_w, sign,
+ exponent(a) + exponent(b));
+ if (tag < 0) {
+ setsign(dest, saved_sign);
+ return tag;
+ }
+ FPU_settagi(deststnr, tag);
+ return tag;
}
- FPU_settagi(deststnr, tag);
- return tag;
- }
- if ( taga == TAG_Special )
- taga = FPU_Special(a);
- if ( tagb == TAG_Special )
- tagb = FPU_Special(b);
+ if (taga == TAG_Special)
+ taga = FPU_Special(a);
+ if (tagb == TAG_Special)
+ tagb = FPU_Special(b);
- if ( ((taga == TAG_Valid) && (tagb == TW_Denormal))
+ if (((taga == TAG_Valid) && (tagb == TW_Denormal))
|| ((taga == TW_Denormal) && (tagb == TAG_Valid))
- || ((taga == TW_Denormal) && (tagb == TW_Denormal)) )
- {
- FPU_REG x, y;
- if ( denormal_operand() < 0 )
- return FPU_Exception;
-
- FPU_to_exp16(a, &x);
- FPU_to_exp16(b, &y);
- tag = FPU_u_mul(&x, &y, dest, control_w, sign,
- exponent16(&x) + exponent16(&y));
- if ( tag < 0 )
- {
- setsign(dest, saved_sign);
- return tag;
- }
- FPU_settagi(deststnr, tag);
- return tag;
- }
- else if ( (taga <= TW_Denormal) && (tagb <= TW_Denormal) )
- {
- if ( ((tagb == TW_Denormal) || (taga == TW_Denormal))
- && (denormal_operand() < 0) )
- return FPU_Exception;
+ || ((taga == TW_Denormal) && (tagb == TW_Denormal))) {
+ FPU_REG x, y;
+ if (denormal_operand() < 0)
+ return FPU_Exception;
- /* Must have either both arguments == zero, or
- one valid and the other zero.
- The result is therefore zero. */
- FPU_copy_to_regi(&CONST_Z, TAG_Zero, deststnr);
- /* The 80486 book says that the answer is +0, but a real
- 80486 behaves this way.
- IEEE-754 apparently says it should be this way. */
- setsign(dest, sign);
- return TAG_Zero;
- }
- /* Must have infinities, NaNs, etc */
- else if ( (taga == TW_NaN) || (tagb == TW_NaN) )
- {
- return real_2op_NaN(b, tagb, deststnr, &st(0));
- }
- else if ( ((taga == TW_Infinity) && (tagb == TAG_Zero))
- || ((tagb == TW_Infinity) && (taga == TAG_Zero)) )
- {
- return arith_invalid(deststnr); /* Zero*Infinity is invalid */
- }
- else if ( ((taga == TW_Denormal) || (tagb == TW_Denormal))
- && (denormal_operand() < 0) )
- {
- return FPU_Exception;
- }
- else if (taga == TW_Infinity)
- {
- FPU_copy_to_regi(a, TAG_Special, deststnr);
- setsign(dest, sign);
- return TAG_Special;
- }
- else if (tagb == TW_Infinity)
- {
- FPU_copy_to_regi(b, TAG_Special, deststnr);
- setsign(dest, sign);
- return TAG_Special;
- }
+ FPU_to_exp16(a, &x);
+ FPU_to_exp16(b, &y);
+ tag = FPU_u_mul(&x, &y, dest, control_w, sign,
+ exponent16(&x) + exponent16(&y));
+ if (tag < 0) {
+ setsign(dest, saved_sign);
+ return tag;
+ }
+ FPU_settagi(deststnr, tag);
+ return tag;
+ } else if ((taga <= TW_Denormal) && (tagb <= TW_Denormal)) {
+ if (((tagb == TW_Denormal) || (taga == TW_Denormal))
+ && (denormal_operand() < 0))
+ return FPU_Exception;
+ /* Must have either both arguments == zero, or
+ one valid and the other zero.
+ The result is therefore zero. */
+ FPU_copy_to_regi(&CONST_Z, TAG_Zero, deststnr);
+ /* The 80486 book says that the answer is +0, but a real
+ 80486 behaves this way.
+ IEEE-754 apparently says it should be this way. */
+ setsign(dest, sign);
+ return TAG_Zero;
+ }
+ /* Must have infinities, NaNs, etc */
+ else if ((taga == TW_NaN) || (tagb == TW_NaN)) {
+ return real_2op_NaN(b, tagb, deststnr, &st(0));
+ } else if (((taga == TW_Infinity) && (tagb == TAG_Zero))
+ || ((tagb == TW_Infinity) && (taga == TAG_Zero))) {
+ return arith_invalid(deststnr); /* Zero*Infinity is invalid */
+ } else if (((taga == TW_Denormal) || (tagb == TW_Denormal))
+ && (denormal_operand() < 0)) {
+ return FPU_Exception;
+ } else if (taga == TW_Infinity) {
+ FPU_copy_to_regi(a, TAG_Special, deststnr);
+ setsign(dest, sign);
+ return TAG_Special;
+ } else if (tagb == TW_Infinity) {
+ FPU_copy_to_regi(b, TAG_Special, deststnr);
+ setsign(dest, sign);
+ return TAG_Special;
+ }
#ifdef PARANOID
- else
- {
- EXCEPTION(EX_INTERNAL|0x102);
- return FPU_Exception;
- }
-#endif /* PARANOID */
+ else {
+ EXCEPTION(EX_INTERNAL | 0x102);
+ return FPU_Exception;
+ }
+#endif /* PARANOID */
return 0;
}