This commit is contained in:
NunoSempere 2024-06-18 22:44:24 -04:00
parent 3133938334
commit 239e21509f
3 changed files with 123 additions and 114 deletions

BIN
.fermi.go.swp Normal file

Binary file not shown.

185
fermi.go
View File

@ -5,6 +5,7 @@ import (
"errors" "errors"
"fmt" "fmt"
"git.nunosempere.com/NunoSempere/fermi/sample" "git.nunosempere.com/NunoSempere/fermi/sample"
"git.nunosempere.com/NunoSempere/fermi/pretty"
"math" "math"
"os" "os"
"sort" "sort"
@ -39,33 +40,6 @@ type FilledSamples struct {
xs []float64 xs []float64
} }
/* Constants */
const GENERAL_ERR_MSG = " Operation | Variable assignment | Special\n" +
" Operation: operator operand\n" +
" operator: (empty) | * | / | + | -\n" +
" operand: scalar | lognormal | beta | variable\n" +
" lognormal: low high\n" +
" beta: beta alpha beta\n" +
" Variable assignment: =: variable_name\n" +
" Clear stack: . | c | clear\n" +
" Variable assignment and clear stack: =. variable_name\n" +
" Other special operations: help | debug | exit\n" +
" Examples: \n" +
" + 2\n" +
" / 2.5\n" +
" * 1 10 (interpreted as lognormal)\n" +
" + 1 10\n" +
" * beta 1 10\n" +
" 1 10 (multiplication taken as default operation)\n" +
" =: x\n" +
" .\n" +
" 1 100\n" +
" + x\n" +
" exit\n"
const NORMAL90CONFIDENCE = 1.6448536269514727
const INIT_DIST Scalar = Scalar(1)
const N_SAMPLES = 100_000
/* Dist interface functions */ /* Dist interface functions */
// https://go.dev/tour/methods/9 // https://go.dev/tour/methods/9
func (p Scalar) Samples() []float64 { func (p Scalar) Samples() []float64 {
@ -93,8 +67,71 @@ func (fs FilledSamples) Samples() []float64 {
return fs.xs return fs.xs
} }
// Parse line into Distribution /* Constants */
const GENERAL_ERR_MSG = " Operation | Variable assignment | Special\n" +
" Operation: operator operand\n" +
" operator: (empty) | * | / | + | -\n" +
" operand: scalar | lognormal | beta | variable\n" +
" lognormal: low high\n" +
" beta: beta alpha beta\n" +
" Variable assignment: =: variable_name\n" +
" Clear stack: . | c | clear\n" +
" Variable assignment and clear stack: =. variable_name\n" +
" Other special operations: help | debug | exit\n" +
" Examples: \n" +
" + 2\n" +
" / 2.5\n" +
" * 1 10 (interpreted as lognormal)\n" +
" + 1 10\n" +
" * beta 1 10\n" +
" 1 10 (multiplication taken as default operation)\n" +
" =: x\n" +
" .\n" +
" 1 100\n" +
" + x\n" +
" exit\n"
const NORMAL90CONFIDENCE = 1.6448536269514727
const INIT_DIST Scalar = Scalar(1)
const N_SAMPLES = 100_000
/* Pretty print for distributions */
// Needs types
func prettyPrintDist(dist Dist) {
switch v := dist.(type) {
case Lognormal:
fmt.Printf("=> ")
pretty.PrettyPrint2Floats(v.low, v.high)
case FilledSamples:
tmp_xs := make([]float64, N_SAMPLES)
copy(tmp_xs, v.xs)
sort.Slice(tmp_xs, func(i, j int) bool {
return tmp_xs[i] < tmp_xs[j]
})
low_int := N_SAMPLES / 20
low := tmp_xs[low_int]
high_int := N_SAMPLES * 19 / 20
high := tmp_xs[high_int]
fmt.Printf("=> ")
pretty.PrettyPrintFloat(low)
fmt.Printf(" ")
pretty.PrettyPrintFloat(high)
fmt.Printf(" (")
pretty.PrettyPrintInt(N_SAMPLES)
fmt.Printf(" samples)\n")
case Beta:
fmt.Printf("=> beta ")
pretty.PrettyPrint2Floats(v.a, v.b)
case Scalar:
fmt.Printf("=> scalar ")
w := float64(v)
pretty.PrettyPrintFloat(w)
fmt.Println()
default:
fmt.Printf("%v", v)
}
}
// Parse line into Distribution
func parseLineErr(err_msg string) (string, Dist, error) { func parseLineErr(err_msg string) (string, Dist, error) {
fmt.Println(GENERAL_ERR_MSG) fmt.Println(GENERAL_ERR_MSG)
fmt.Println(err_msg) fmt.Println(err_msg)
@ -253,8 +290,10 @@ func divideDists(old_dist Dist, new_dist Dist) (Dist, error) {
{ {
switch n := new_dist.(type) { switch n := new_dist.(type) {
case Lognormal: case Lognormal:
// to do: check division by zero
return multiplyLogDists(o, Lognormal{low: 1.0 / n.high, high: 1.0 / n.low}), nil return multiplyLogDists(o, Lognormal{low: 1.0 / n.high, high: 1.0 / n.low}), nil
case Scalar: case Scalar:
// to do: check division by zero
return multiplyLogDists(o, Lognormal{low: 1.0 / float64(n), high: 1.0 / float64(n)}), nil return multiplyLogDists(o, Lognormal{low: 1.0 / float64(n), high: 1.0 / float64(n)}), nil
default: default:
return operateDistsAsSamples(old_dist, new_dist, "/") return operateDistsAsSamples(old_dist, new_dist, "/")
@ -266,6 +305,7 @@ func divideDists(old_dist Dist, new_dist Dist) (Dist, error) {
case Lognormal: case Lognormal:
return multiplyLogDists(Lognormal{low: float64(o), high: float64(o)}, Lognormal{low: 1.0 / n.high, high: 1.0 / n.low}), nil return multiplyLogDists(Lognormal{low: float64(o), high: float64(o)}, Lognormal{low: 1.0 / n.high, high: 1.0 / n.low}), nil
case Scalar: case Scalar:
// to do: check division by zero
return Scalar(float64(o) / float64(n)), nil return Scalar(float64(o) / float64(n)), nil
default: default:
return operateDistsAsSamples(old_dist, new_dist, "/") return operateDistsAsSamples(old_dist, new_dist, "/")
@ -276,92 +316,9 @@ func divideDists(old_dist Dist, new_dist Dist) (Dist, error) {
} }
} }
/* Pretty print distributions
*/
func prettyPrintInt(n int) {
switch {
case math.Abs(float64(n)) >= 1_000_000_000_000:
fmt.Printf("%dT", n/1_000_000_000_000)
case math.Abs(float64(n)) >= 1_000_000_000:
fmt.Printf("%dB", n/1_000_000_000)
case math.Abs(float64(n)) >= 1_000_000:
fmt.Printf("%dM", n/1_000_000)
case math.Abs(float64(n)) >= 1_000:
fmt.Printf("%dK", n/1_000)
default:
fmt.Printf("%df", n)
}
}
func prettyPrintFloat(f float64) {
switch {
case math.Abs(f) >= 1_000_000_000_000:
fmt.Printf("%.1fT", f/1_000_000_000_000)
case math.Abs(f) >= 1_000_000_000:
fmt.Printf("%.1fB", f/1_000_000_000)
case math.Abs(f) >= 1_000_000:
fmt.Printf("%.1fM", f/1_000_000)
case math.Abs(f) >= 1_000:
fmt.Printf("%.1fK", f/1_000)
case math.Abs(f) <= 0.0001:
fmt.Printf("%.5f", f)
case math.Abs(f) <= 0.001:
fmt.Printf("%.4f", f)
case math.Abs(f) <= 0.01:
fmt.Printf("%.3f", f)
case math.Abs(f) <= 0.1:
fmt.Printf("%.2f", f)
default:
fmt.Printf("%.1f", f)
}
}
func prettyPrint2Floats(low float64, high float64) {
prettyPrintFloat(low)
fmt.Printf(" ")
prettyPrintFloat(high)
fmt.Printf("\n")
}
func prettyPrintDist(dist Dist) {
switch v := dist.(type) {
case Lognormal:
fmt.Printf("=> ")
prettyPrint2Floats(v.low, v.high)
case FilledSamples:
tmp_xs := make([]float64, N_SAMPLES)
copy(tmp_xs, v.xs)
sort.Slice(tmp_xs, func(i, j int) bool {
return tmp_xs[i] < tmp_xs[j]
})
low_int := N_SAMPLES / 20
low := tmp_xs[low_int]
high_int := N_SAMPLES * 19 / 20
high := tmp_xs[high_int]
fmt.Printf("=> ")
prettyPrintFloat(low)
fmt.Printf(" ")
prettyPrintFloat(high)
fmt.Printf(" (")
prettyPrintInt(N_SAMPLES)
fmt.Printf(" samples)\n")
case Beta:
fmt.Printf("=> beta ")
prettyPrint2Floats(v.a, v.b)
case Scalar:
fmt.Printf("=> scalar ")
w := float64(v)
prettyPrintFloat(w)
fmt.Println()
default:
fmt.Printf("%v", v)
}
}
/* Combine old dist and new line */ /* Combine old dist and new line */
// We want this as a function to be able to have parenthesis/recusion, possibly functions // We want this as a function to be able to have parenthesis/recusion, possibly functions
func combineStackAndDist(stack Stack, new_dist Dist, op string) Stack { func operateStackWithDist(stack Stack, new_dist Dist, op string) Stack {
var combined_dist Dist var combined_dist Dist
var err error var err error
@ -403,7 +360,7 @@ func runRepl(stack Stack, reader *bufio.Reader) Stack {
/* Parenthesis */ /* Parenthesis */
case len(words) == 2 && (words[0] == "*" || words[0] == "+" || words[0] == "-" || words[0] == "/") && words[1] == "(": case len(words) == 2 && (words[0] == "*" || words[0] == "+" || words[0] == "-" || words[0] == "/") && words[1] == "(":
new_stack := runRepl(Stack{old_dist: INIT_DIST, vars: stack.vars}, reader) new_stack := runRepl(Stack{old_dist: INIT_DIST, vars: stack.vars}, reader)
stack = combineStackAndDist(stack, new_stack.old_dist, words[0]) stack = operateStackWithDist(stack, new_stack.old_dist, words[0])
prettyPrintDist(stack.old_dist) prettyPrintDist(stack.old_dist)
case len(words) == 1 && words[0] == ")": case len(words) == 1 && words[0] == ")":
return stack return stack
@ -439,7 +396,7 @@ func runRepl(stack Stack, reader *bufio.Reader) Stack {
if err != nil { if err != nil {
continue replForLoop continue replForLoop
} }
stack = combineStackAndDist(stack, new_dist, op) stack = operateStackWithDist(stack, new_dist, op)
prettyPrintDist(stack.old_dist) prettyPrintDist(stack.old_dist)
} }
} }

52
pretty/pretty.go Normal file
View File

@ -0,0 +1,52 @@
package pretty
import (
"fmt"
"math"
)
func PrettyPrintInt(n int) {
switch {
case math.Abs(float64(n)) >= 1_000_000_000_000:
fmt.Printf("%dT", n/1_000_000_000_000)
case math.Abs(float64(n)) >= 1_000_000_000:
fmt.Printf("%dB", n/1_000_000_000)
case math.Abs(float64(n)) >= 1_000_000:
fmt.Printf("%dM", n/1_000_000)
case math.Abs(float64(n)) >= 1_000:
fmt.Printf("%dK", n/1_000)
default:
fmt.Printf("%df", n)
}
}
func PrettyPrintFloat(f float64) {
switch {
case math.Abs(f) >= 1_000_000_000_000:
fmt.Printf("%.1fT", f/1_000_000_000_000)
case math.Abs(f) >= 1_000_000_000:
fmt.Printf("%.1fB", f/1_000_000_000)
case math.Abs(f) >= 1_000_000:
fmt.Printf("%.1fM", f/1_000_000)
case math.Abs(f) >= 1_000:
fmt.Printf("%.1fK", f/1_000)
case math.Abs(f) <= 0.0001:
fmt.Printf("%.5f", f)
case math.Abs(f) <= 0.001:
fmt.Printf("%.4f", f)
case math.Abs(f) <= 0.01:
fmt.Printf("%.3f", f)
case math.Abs(f) <= 0.1:
fmt.Printf("%.2f", f)
default:
fmt.Printf("%.1f", f)
}
}
func PrettyPrint2Floats(low float64, high float64) {
PrettyPrintFloat(low)
fmt.Printf(" ")
PrettyPrintFloat(high)
fmt.Printf("\n")
}