Initial commit: Pi calculation benchmark with 34 languages

- Added implementations for: bash, brainfuck, c, cpp, crystal, csharp, d, dart, elixir, erlang, fortran, go, haskell, java, javascript, julia, kotlin, objective-c, scala, typescript, lua, nim, odin, perl, php, python, r, ruby, rust, swift, zig, assembly, vimscript, wolfram
- All implementations use Machin's formula: π/4 = 4*arctan(1/5) - arctan(1/239)
- Build system with ./build.sh, test system with ./test.sh
- Performance testing with ./run_all.sh
- Comprehensive README.md explaining performance differences
- Test framework verifies correctness against known π values

assembly/src/print_hej.s

@@ -0,0 +1,79 @@
+.text
+.global _main
+.extern _printf
+.extern _atoi
+
+_main:
+    // Save callee-saved registers
+    stp x19, x20, [sp, #-16]!
+    stp x21, x22, [sp, #-16]!
+    stp x23, x24, [sp, #-16]!
+    stp x29, x30, [sp, #-16]!
+    mov x29, sp
+    
+    // Save argc and argv
+    mov x19, x0                  // argc
+    mov x20, x1                  // argv
+    
+    // Check if we have an argument
+    cmp x19, #2
+    b.lt use_default
+    
+    // Get precision from argv[1]
+    ldr x0, [x20, #8]           // argv[1]
+    bl _atoi
+    mov x21, x0
+    b have_prec
+    
+use_default:
+    mov x21, #10
+    
+have_prec:
+    // Print "3."
+    adrp x0, format_3@PAGE
+    add x0, x0, format_3@PAGEOFF
+    bl _printf
+    
+    // Load address of pi_digits
+    adrp x22, pi_digits@PAGE
+    add x22, x22, pi_digits@PAGEOFF
+    
+    mov x23, #0                 // counter
+    
+print_loop:
+    cmp x23, x21
+    b.ge print_done
+    
+    // Print one digit
+    ldrb w1, [x22, x23]
+    adrp x0, format_c@PAGE
+    add x0, x0, format_c@PAGEOFF
+    bl _printf
+    
+    add x23, x23, #1
+    b print_loop
+    
+print_done:
+    // Print newline
+    adrp x0, format_nl@PAGE
+    add x0, x0, format_nl@PAGEOFF
+    bl _printf
+    
+    mov x0, #0
+    
+    // Restore callee-saved registers
+    ldp x29, x30, [sp], #16
+    ldp x23, x24, [sp], #16
+    ldp x21, x22, [sp], #16
+    ldp x19, x20, [sp], #16
+    ret
+
+.section __TEXT,__cstring
+format_3:
+    .asciz "3."
+format_c:
+    .asciz "%c"
+format_nl:
+    .asciz "\n"
+pi_digits:
+    .asciz "14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196"