aboutsummaryrefslogtreecommitdiff
path: root/src/cmd/internal/gc/mparith2.go
diff options
context:
space:
mode:
Diffstat (limited to 'src/cmd/internal/gc/mparith2.go')
-rw-r--r--src/cmd/internal/gc/mparith2.go155
1 files changed, 52 insertions, 103 deletions
diff --git a/src/cmd/internal/gc/mparith2.go b/src/cmd/internal/gc/mparith2.go
index 057585c65c..c9c9230bd5 100644
--- a/src/cmd/internal/gc/mparith2.go
+++ b/src/cmd/internal/gc/mparith2.go
@@ -9,11 +9,8 @@ package gc
// words of the argument
//
func mplen(a *Mpint) int {
- var i int
- var n int
-
- n = -1
- for i = 0; i < Mpprec; i++ {
+ n := -1
+ for i := 0; i < Mpprec; i++ {
if a.A[i] != 0 {
n = i
}
@@ -28,11 +25,9 @@ func mplen(a *Mpint) int {
//
func mplsh(a *Mpint, quiet int) {
var x int
- var i int
- var c int
- c = 0
- for i = 0; i < Mpprec; i++ {
+ c := 0
+ for i := 0; i < Mpprec; i++ {
x = (a.A[i] << 1) + c
c = 0
if x >= Mpbase {
@@ -54,9 +49,7 @@ func mplsh(a *Mpint, quiet int) {
// ignores sign
//
func mplshw(a *Mpint, quiet int) {
- var i int
-
- i = Mpprec - 1
+ i := Mpprec - 1
if a.A[i] != 0 {
a.Ovf = 1
if quiet == 0 {
@@ -76,13 +69,10 @@ func mplshw(a *Mpint, quiet int) {
//
func mprsh(a *Mpint) {
var x int
- var lo int
- var i int
- var c int
- c = 0
- lo = a.A[0] & 1
- for i = Mpprec - 1; i >= 0; i-- {
+ c := 0
+ lo := a.A[0] & 1
+ for i := Mpprec - 1; i >= 0; i-- {
x = a.A[i]
a.A[i] = (x + c) >> 1
c = 0
@@ -101,10 +91,9 @@ func mprsh(a *Mpint) {
// ignores sign and overflow
//
func mprshw(a *Mpint) {
- var lo int
var i int
- lo = a.A[0]
+ lo := a.A[0]
for i = 0; i < Mpprec-1; i++ {
a.A[i] = a.A[i+1]
}
@@ -119,9 +108,6 @@ func mprshw(a *Mpint) {
// return the sign of (abs(a)-abs(b))
//
func mpcmp(a *Mpint, b *Mpint) int {
- var x int
- var i int
-
if a.Ovf != 0 || b.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("ovf in cmp")
@@ -129,7 +115,8 @@ func mpcmp(a *Mpint, b *Mpint) int {
return 0
}
- for i = Mpprec - 1; i >= 0; i-- {
+ var x int
+ for i := Mpprec - 1; i >= 0; i-- {
x = a.A[i] - b.A[i]
if x > 0 {
return +1
@@ -148,11 +135,9 @@ func mpcmp(a *Mpint, b *Mpint) int {
//
func mpneg(a *Mpint) {
var x int
- var i int
- var c int
- c = 0
- for i = 0; i < Mpprec; i++ {
+ c := 0
+ for i := 0; i < Mpprec; i++ {
x = -a.A[i] - c
c = 0
if x < 0 {
@@ -193,10 +178,6 @@ func Mpshiftfix(a *Mpint, s int) {
/// implements fix arihmetic
func mpaddfixfix(a *Mpint, b *Mpint, quiet int) {
- var i int
- var c int
- var x int
-
if a.Ovf != 0 || b.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("ovf in mpaddxx")
@@ -205,13 +186,14 @@ func mpaddfixfix(a *Mpint, b *Mpint, quiet int) {
return
}
- c = 0
+ c := 0
+ var x int
if a.Neg != b.Neg {
goto sub
}
// perform a+b
- for i = 0; i < Mpprec; i++ {
+ for i := 0; i < Mpprec; i++ {
x = a.A[i] + b.A[i] + c
c = 0
if x >= Mpbase {
@@ -236,7 +218,8 @@ sub:
Mpmovecfix(a, 0)
case 1:
- for i = 0; i < Mpprec; i++ {
+ var x int
+ for i := 0; i < Mpprec; i++ {
x = a.A[i] - b.A[i] - c
c = 0
if x < 0 {
@@ -249,7 +232,8 @@ sub:
case -1:
a.Neg ^= 1
- for i = 0; i < Mpprec; i++ {
+ var x int
+ for i := 0; i < Mpprec; i++ {
x = b.A[i] - a.A[i] - c
c = 0
if x < 0 {
@@ -263,15 +247,6 @@ sub:
}
func mpmulfixfix(a *Mpint, b *Mpint) {
- var i int
- var j int
- var na int
- var nb int
- var x int
- var s Mpint
- var q Mpint
- var c *Mpint
-
if a.Ovf != 0 || b.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("ovf in mpmulfixfix")
@@ -282,9 +257,11 @@ func mpmulfixfix(a *Mpint, b *Mpint) {
// pick the smaller
// to test for bits
- na = mplen(a)
+ na := mplen(a)
- nb = mplen(b)
+ nb := mplen(b)
+ var s Mpint
+ var c *Mpint
if na > nb {
mpmovefixfix(&s, a)
c = b
@@ -296,8 +273,11 @@ func mpmulfixfix(a *Mpint, b *Mpint) {
s.Neg = 0
+ var q Mpint
Mpmovecfix(&q, 0)
- for i = 0; i < na; i++ {
+ var j int
+ var x int
+ for i := 0; i < na; i++ {
x = c.A[i]
for j = 0; j < Mpscale; j++ {
if x&1 != 0 {
@@ -326,12 +306,6 @@ out:
}
func mpmulfract(a *Mpint, b *Mpint) {
- var i int
- var j int
- var x int
- var s Mpint
- var q Mpint
-
if a.Ovf != 0 || b.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("ovf in mpmulflt")
@@ -340,16 +314,19 @@ func mpmulfract(a *Mpint, b *Mpint) {
return
}
+ var s Mpint
mpmovefixfix(&s, b)
s.Neg = 0
+ var q Mpint
Mpmovecfix(&q, 0)
- i = Mpprec - 1
- x = a.A[i]
+ i := Mpprec - 1
+ x := a.A[i]
if x != 0 {
Yyerror("mpmulfract not normal")
}
+ var j int
for i--; i >= 0; i-- {
x = a.A[i]
if x == 0 {
@@ -374,10 +351,7 @@ func mpmulfract(a *Mpint, b *Mpint) {
}
func mporfixfix(a *Mpint, b *Mpint) {
- var i int
- var x int
-
- x = 0
+ x := 0
if a.Ovf != 0 || b.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("ovf in mporfixfix")
@@ -396,7 +370,7 @@ func mporfixfix(a *Mpint, b *Mpint) {
mpneg(b)
}
- for i = 0; i < Mpprec; i++ {
+ for i := 0; i < Mpprec; i++ {
x = a.A[i] | b.A[i]
a.A[i] = x
}
@@ -411,10 +385,7 @@ func mporfixfix(a *Mpint, b *Mpint) {
}
func mpandfixfix(a *Mpint, b *Mpint) {
- var i int
- var x int
-
- x = 0
+ x := 0
if a.Ovf != 0 || b.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("ovf in mpandfixfix")
@@ -433,7 +404,7 @@ func mpandfixfix(a *Mpint, b *Mpint) {
mpneg(b)
}
- for i = 0; i < Mpprec; i++ {
+ for i := 0; i < Mpprec; i++ {
x = a.A[i] & b.A[i]
a.A[i] = x
}
@@ -448,10 +419,7 @@ func mpandfixfix(a *Mpint, b *Mpint) {
}
func mpandnotfixfix(a *Mpint, b *Mpint) {
- var i int
- var x int
-
- x = 0
+ x := 0
if a.Ovf != 0 || b.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("ovf in mpandnotfixfix")
@@ -470,7 +438,7 @@ func mpandnotfixfix(a *Mpint, b *Mpint) {
mpneg(b)
}
- for i = 0; i < Mpprec; i++ {
+ for i := 0; i < Mpprec; i++ {
x = a.A[i] &^ b.A[i]
a.A[i] = x
}
@@ -485,10 +453,7 @@ func mpandnotfixfix(a *Mpint, b *Mpint) {
}
func mpxorfixfix(a *Mpint, b *Mpint) {
- var i int
- var x int
-
- x = 0
+ x := 0
if a.Ovf != 0 || b.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("ovf in mporfixfix")
@@ -507,7 +472,7 @@ func mpxorfixfix(a *Mpint, b *Mpint) {
mpneg(b)
}
- for i = 0; i < Mpprec; i++ {
+ for i := 0; i < Mpprec; i++ {
x = a.A[i] ^ b.A[i]
a.A[i] = x
}
@@ -522,8 +487,6 @@ func mpxorfixfix(a *Mpint, b *Mpint) {
}
func mplshfixfix(a *Mpint, b *Mpint) {
- var s int64
-
if a.Ovf != 0 || b.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("ovf in mporfixfix")
@@ -533,7 +496,7 @@ func mplshfixfix(a *Mpint, b *Mpint) {
return
}
- s = Mpgetfix(b)
+ s := Mpgetfix(b)
if s < 0 || s >= Mpprec*Mpscale {
Yyerror("stupid shift: %d", s)
Mpmovecfix(a, 0)
@@ -544,8 +507,6 @@ func mplshfixfix(a *Mpint, b *Mpint) {
}
func mprshfixfix(a *Mpint, b *Mpint) {
- var s int64
-
if a.Ovf != 0 || b.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("ovf in mprshfixfix")
@@ -555,7 +516,7 @@ func mprshfixfix(a *Mpint, b *Mpint) {
return
}
- s = Mpgetfix(b)
+ s := Mpgetfix(b)
if s < 0 || s >= Mpprec*Mpscale {
Yyerror("stupid shift: %d", s)
if a.Neg != 0 {
@@ -574,8 +535,6 @@ func mpnegfix(a *Mpint) {
}
func Mpgetfix(a *Mpint) int64 {
- var v int64
-
if a.Ovf != 0 {
if nsavederrors+nerrors == 0 {
Yyerror("constant overflow")
@@ -583,7 +542,7 @@ func Mpgetfix(a *Mpint) int64 {
return 0
}
- v = int64(uint64(a.A[0]))
+ v := int64(uint64(a.A[0]))
v |= int64(uint64(a.A[1]) << Mpscale)
v |= int64(uint64(a.A[2]) << (Mpscale + Mpscale))
if a.Neg != 0 {
@@ -593,19 +552,16 @@ func Mpgetfix(a *Mpint) int64 {
}
func Mpmovecfix(a *Mpint, c int64) {
- var i int
- var x int64
-
a.Neg = 0
a.Ovf = 0
- x = c
+ x := c
if x < 0 {
a.Neg = 1
x = int64(-uint64(x))
}
- for i = 0; i < Mpprec; i++ {
+ for i := 0; i < Mpprec; i++ {
a.A[i] = int(x & Mpmask)
x >>= Mpscale
}
@@ -613,11 +569,9 @@ func Mpmovecfix(a *Mpint, c int64) {
func mpdivmodfixfix(q *Mpint, r *Mpint, n *Mpint, d *Mpint) {
var i int
- var ns int
- var ds int
- ns = int(n.Neg)
- ds = int(d.Neg)
+ ns := int(n.Neg)
+ ds := int(d.Neg)
n.Neg = 0
d.Neg = 0
@@ -664,9 +618,7 @@ func mpdivmodfixfix(q *Mpint, r *Mpint, n *Mpint, d *Mpint) {
}
func mpiszero(a *Mpint) bool {
- var i int
-
- for i = Mpprec - 1; i >= 0; i-- {
+ for i := Mpprec - 1; i >= 0; i-- {
if a.A[i] != 0 {
return false
}
@@ -677,19 +629,17 @@ func mpiszero(a *Mpint) bool {
func mpdivfract(a *Mpint, b *Mpint) {
var n Mpint
var d Mpint
- var i int
var j int
- var neg int
var x int
mpmovefixfix(&n, a) // numerator
mpmovefixfix(&d, b) // denominator
- neg = int(n.Neg) ^ int(d.Neg)
+ neg := int(n.Neg) ^ int(d.Neg)
n.Neg = 0
d.Neg = 0
- for i = Mpprec - 1; i >= 0; i-- {
+ for i := Mpprec - 1; i >= 0; i-- {
x = 0
for j = 0; j < Mpscale; j++ {
x <<= 1
@@ -711,10 +661,9 @@ func mpdivfract(a *Mpint, b *Mpint) {
func mptestfix(a *Mpint) int {
var b Mpint
- var r int
Mpmovecfix(&b, 0)
- r = mpcmp(a, &b)
+ r := mpcmp(a, &b)
if a.Neg != 0 {
if r > 0 {
return -1
7apu2bq3rhoylwmucxizk54afw5jyda7pho4j5zdcqpwkufke7zdzwad.onion