diff options
Diffstat (limited to 'src/pkg/strconv/fp_test.go')
| -rw-r--r-- | src/pkg/strconv/fp_test.go | 116 | 
1 files changed, 58 insertions, 58 deletions
| diff --git a/src/pkg/strconv/fp_test.go b/src/pkg/strconv/fp_test.go index 8fee9f84c..2f0172a72 100644 --- a/src/pkg/strconv/fp_test.go +++ b/src/pkg/strconv/fp_test.go @@ -5,12 +5,12 @@  package strconv_test  import ( -	"bufio"; -	"fmt"; -	"os"; -	"strconv"; -	"strings"; -	"testing"; +	"bufio" +	"fmt" +	"os" +	"strconv" +	"strings" +	"testing"  )  func pow2(i int) float64 { @@ -22,124 +22,124 @@ func pow2(i int) float64 {  	case i == 1:  		return 2  	} -	return pow2(i/2) * pow2(i-i/2); +	return pow2(i/2) * pow2(i-i/2)  }  // Wrapper around strconv.Atof64.  Handles dddddp+ddd (binary exponent)  // itself, passes the rest on to strconv.Atof64.  func myatof64(s string) (f float64, ok bool) { -	a := strings.Split(s, "p", 2); +	a := strings.Split(s, "p", 2)  	if len(a) == 2 { -		n, err := strconv.Atoi64(a[0]); +		n, err := strconv.Atoi64(a[0])  		if err != nil {  			return 0, false  		} -		e, err1 := strconv.Atoi(a[1]); +		e, err1 := strconv.Atoi(a[1])  		if err1 != nil { -			println("bad e", a[1]); -			return 0, false; +			println("bad e", a[1]) +			return 0, false  		} -		v := float64(n); +		v := float64(n)  		// We expect that v*pow2(e) fits in a float64,  		// but pow2(e) by itself may not.  Be careful.  		if e <= -1000 { -			v *= pow2(-1000); -			e += 1000; +			v *= pow2(-1000) +			e += 1000  			for e < 0 { -				v /= 2; -				e++; +				v /= 2 +				e++  			} -			return v, true; +			return v, true  		}  		if e >= 1000 { -			v *= pow2(1000); -			e -= 1000; +			v *= pow2(1000) +			e -= 1000  			for e > 0 { -				v *= 2; -				e--; +				v *= 2 +				e--  			} -			return v, true; +			return v, true  		} -		return v * pow2(e), true; +		return v * pow2(e), true  	} -	f1, err := strconv.Atof64(s); +	f1, err := strconv.Atof64(s)  	if err != nil {  		return 0, false  	} -	return f1, true; +	return f1, true  }  // Wrapper around strconv.Atof32.  Handles dddddp+ddd (binary exponent)  // itself, passes the rest on to strconv.Atof32.  func myatof32(s string) (f float32, ok bool) { -	a := strings.Split(s, "p", 2); +	a := strings.Split(s, "p", 2)  	if len(a) == 2 { -		n, err := strconv.Atoi(a[0]); +		n, err := strconv.Atoi(a[0])  		if err != nil { -			println("bad n", a[0]); -			return 0, false; +			println("bad n", a[0]) +			return 0, false  		} -		e, err1 := strconv.Atoi(a[1]); +		e, err1 := strconv.Atoi(a[1])  		if err1 != nil { -			println("bad p", a[1]); -			return 0, false; +			println("bad p", a[1]) +			return 0, false  		} -		return float32(float64(n) * pow2(e)), true; +		return float32(float64(n) * pow2(e)), true  	} -	f1, err1 := strconv.Atof32(s); +	f1, err1 := strconv.Atof32(s)  	if err1 != nil {  		return 0, false  	} -	return f1, true; +	return f1, true  }  func TestFp(t *testing.T) { -	f, err := os.Open("testfp.txt", os.O_RDONLY, 0); +	f, err := os.Open("testfp.txt", os.O_RDONLY, 0)  	if err != nil {  		panicln("testfp: open testfp.txt:", err.String())  	} -	defer f.Close(); +	defer f.Close() -	b := bufio.NewReader(f); +	b := bufio.NewReader(f) -	lineno := 0; +	lineno := 0  	for { -		line, err2 := b.ReadString('\n'); +		line, err2 := b.ReadString('\n')  		if err2 == os.EOF {  			break  		}  		if err2 != nil {  			panicln("testfp: read testfp.txt:", err2.String())  		} -		line = line[0 : len(line)-1]; -		lineno++; +		line = line[0 : len(line)-1] +		lineno++  		if len(line) == 0 || line[0] == '#' {  			continue  		} -		a := strings.Split(line, " ", 0); +		a := strings.Split(line, " ", 0)  		if len(a) != 4 { -			t.Error("testfp.txt:", lineno, ": wrong field count\n"); -			continue; +			t.Error("testfp.txt:", lineno, ": wrong field count\n") +			continue  		} -		var s string; -		var v float64; +		var s string +		var v float64  		switch a[0] {  		case "float64": -			var ok bool; -			v, ok = myatof64(a[2]); +			var ok bool +			v, ok = myatof64(a[2])  			if !ok { -				t.Error("testfp.txt:", lineno, ": cannot atof64 ", a[2]); -				continue; +				t.Error("testfp.txt:", lineno, ": cannot atof64 ", a[2]) +				continue  			} -			s = fmt.Sprintf(a[1], v); +			s = fmt.Sprintf(a[1], v)  		case "float32": -			v1, ok := myatof32(a[2]); +			v1, ok := myatof32(a[2])  			if !ok { -				t.Error("testfp.txt:", lineno, ": cannot atof32 ", a[2]); -				continue; +				t.Error("testfp.txt:", lineno, ": cannot atof32 ", a[2]) +				continue  			} -			s = fmt.Sprintf(a[1], v1); -			v = float64(v1); +			s = fmt.Sprintf(a[1], v1) +			v = float64(v1)  		}  		if s != a[3] {  			t.Error("testfp.txt:", lineno, ": ", a[0], " ", a[1], " ", a[2], " (", v, ") ", | 
