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use rug::{Float, Integer};
use rug::ops::Pow;
const A: i64 = 13591409;
const B: i64 = 545140134;
const C: i64 = 640320;
fn main() {
let digits: u32 = 100_000;
let prec: u32 = (digits as f64 * 3.5) as u32;
build/ deps/ examples/ incremental/ pi_calc2 pi_calc2.d
root@box:/home/tc/pi_calc2/target/release# ./pi_calc2
3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593344612847564823378678316527120190914564856692346034861045432664821339360726024914127372458700660631558817488152092096282
Outputs π to 10k digits on a Pi 400 without issues.
root@box:/home/tc/pi_calc/target/release# ls
build/ examples/ pi_calc picorepi.txt
deps/ incremental/ pi_calc.d picorepi.txt.save
root@box:/home/tc/pi_calc/target/release# ./pi_calc
3.926009437285052832929674253952655321963427871984921170640715706070289694520275370741966576393802824749249195563563914991063978437861359728305354317459983402318064085941521245980071440987892054335406062657458Hi geev03Thank you.
Please use Code Tags when posting commands and responses seen in a terminal. To use Code Tags click on the # icon
above the reply box and paste your text between the Code Tags as shown in this example:
#!/bin/sh
# Ultra-minimal system info script for piCore / BusyBox
# with TinyCore + Raspberry Pi hybrid ASCII logo
HOST=$(hostname)
KERNEL=$(uname -r)
ARCH=$(uname -m)
UPTIME=$(uptime | sed 's/.*up \([^,]*\),.*/\1/')
LOAD=$(cut -d " " -f1-3 /proc/loadavg)
CPU_MODEL=$(grep "Model" /proc/cpuinfo | head -n1 | cut -d ":" -f2 | sed 's/^ //')
CPU_CORES=$(grep -c "^processor" /proc/cpuinfo)
MEM_TOTAL=$(grep MemTotal /proc/meminfo | awk '{printf "%.1f MB", $2/1024}')
MEM_FREE=$(grep MemAvailable /proc/meminfo | awk '{printf "%.1f MB", $2/1024}')
clear
echo ""
echo " .~~. .~~."
echo " '. \ ' ' / .'"
echo " .~~ .~~~..~~~. ~~."
echo " : .~.'~'.~~.'~'.~. :"
echo " ~ ( ) ( @ ) ( ) ~"
echo " ( : '~'.~.'~~'.~.'~' : )"
echo " ~ .~ ( ) ~~ ( ) ~"
echo " ( : '~' :~~: '~' : )"
echo " '~ .~~~. ~ ~ .~~~. ~'"
echo " '~' '~'"
echo " [ tiny-pi-core ]"
echo ""
echo " ┌──────────────────────────────┐"
echo " │ piCore System │"
echo " └──────────────────────────────┘"
echo " Hostname: $HOST"
echo " Kernel: $KERNEL"
echo " Arch: $ARCH"
echo " Uptime: $UPTIME"
echo " Load Avg: $LOAD"
echo " CPU Model: $CPU_MODEL"
echo " CPU Cores: $CPU_CORES"
echo " RAM Total: $MEM_TOTAL"
echo " RAM Free: $MEM_FREE"
echo ""[code][ 36.176529] pcm512x 1-004d: Failed to get supply 'AVDD': -517
[ 36.176536] pcm512x 1-004d: Failed to get supplies: -517
[ 36.191753] pcm512x 1-004d: Failed to get supply 'AVDD': -517[/code]
[ 36.176529] pcm512x 1-004d: Failed to get supply 'AVDD': -517
[ 36.176536] pcm512x 1-004d: Failed to get supplies: -517
[ 36.191753] pcm512x 1-004d: Failed to get supply 'AVDD': -517root@box:/home/tc/bin# ./sysinfo
.~~. .~~.
'. \ ' ' / .'
.~~ .~~~..~~~. ~~.
: .~.'~'.~~.'~'.~. :
~ ( ) ( @ ) ( ) ~
( : '~'.~.'~~'.~.'~' : )
~ .~ ( ) ~~ ( ) ~
( : '~' :~~: '~' : )
'~ .~~~. ~ ~ .~~~. ~'
'~' '~'
[ tiny-pi-core ]
┌──────────────────────────────┐
│ piCore System │
└──────────────────────────────┘
Hostname: box
Kernel: 6.12.25-piCore-v8
Arch: aarch64
Uptime: 1:52
Load Avg: 0.00 0.00 0.09
CPU Model: Raspberry Pi 400 Rev 1.0
CPU Cores: 4
RAM Total: 3797.4 MB
RAM Free: 3461.8 MB tce-load -wi rust compiletc binutils make ``` cargo new pi_calc ``````rust
use rug::{Float};
use rug::ops::Pow;
fn main() {
let digits: u32 = 10000;
let prec: u32 = digits + 20;
let pi = compute_pi(prec);
println!("{}", pi.to_string_radix(10, Some((digits + 2) as usize)));
}
fn compute_pi(prec: u32) -> Float {
let mut sum = Float::with_val(prec, 0);
for k in 0..20 {
let f6k = factorial(6 * k);
let f3k = factorial(3 * k);
let fk = factorial(k);
let a = Float::with_val(prec, 13591409 + 545140134 * k as i32);
let b = Float::with_val(prec, 640320).pow(3 * k + 1);
let term = Float::with_val(prec, &f6k * a / (&f3k * fk.pow(3) * b));
if k % 2 == 0 { sum += term } else { sum -= term }
}
Float::with_val(prec, 1) / (Float::with_val(prec, 12) * sum)
}
fn factorial(n: u32) -> Float {
let mut f = Float::with_val(128, 1);
for i in 2..=n { f *= i }
f
}
```