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authorBraxton Hall2022-10-24 23:55:09 +0000
committerGitHub2022-10-24 23:55:09 +0000
commit5b3e4fb8a606385392b24dba3553db3dcb1cd711 (patch)
tree666aa4198d53409554eef85f1d8839442c196e1f /entries/dewert99
parent7ed13a92711a35a9c263c1f53e33e308653ae727 (diff)
parent40fdd4d0694f2dc0dd394901dad9884d277459db (diff)
Merge pull request #30 from dewert99/main
dewert99 Fibonacci
Diffstat (limited to 'entries/dewert99')
-rw-r--r--entries/dewert99/fib.rs22
-rw-r--r--entries/dewert99/fib_compiled13
2 files changed, 35 insertions, 0 deletions
diff --git a/entries/dewert99/fib.rs b/entries/dewert99/fib.rs
new file mode 100644
index 0000000..ecf0a85
--- /dev/null
+++ b/entries/dewert99/fib.rs
@@ -0,0 +1,22 @@
+const MAX: usize = 94;
+
+const fn fibc<const N: usize>() -> [u64; N] {
+ let mut res = [0; N];
+ res[1] = 1;
+ let mut i = 2;
+ while i < N {
+ res[i] = res[i - 1] + res[i - 2];
+ i += 1;
+ }
+ res
+}
+
+static FIB: [u64; MAX] = fibc();
+
+pub fn fib(n: usize) -> Option<u64> {
+ if n >= MAX {
+ None // Fib of n wouldn't fit in 64-bits
+ } else {
+ Some(FIB[n])
+ }
+}
diff --git a/entries/dewert99/fib_compiled b/entries/dewert99/fib_compiled
new file mode 100644
index 0000000..0a0d3a8
--- /dev/null
+++ b/entries/dewert99/fib_compiled
@@ -0,0 +1,13 @@
+example::fib:
+ cmp rdi, 94
+ jb .LBB0_3
+ xor eax, eax
+ ret
+.LBB0_3:
+ lea rax, [rip + example::FIB]
+ mov rdx, qword ptr [rax + 8*rdi]
+ mov eax, 1
+ ret
+
+example::FIB:
+ .ascii "\000\000\000\000\000\000\000\000\001\000\000\000\000\000\000\000\001\000\000\000\000\000\000\000\002\000\000\000\000\000\000\000\003\000\000\000\000\000\000\000\005\000\000\000\000\000\000\000\b\000\000\000\000\000\000\000\r\000\000\000\000\000\000\000\025\000\000\000\000\000\000\000\"\000\000\000\000\000\000\0007\000\000\000\000\000\000\000Y\000\000\000\000\000\000\000\220\000\000\000\000\000\000\000\351\000\000\000\000\000\000\000y\001\000\000\000\000\000\000b\002\000\000\000\000\000\000\333\003\000\000\000\000\000\000=\006\000\000\000\000\000\000\030\n\000\000\000\000\000\000U\020\000\000\000\000\000\000m\032\000\000\000\000\000\000\302*\000\000\000\000\000\000/E\000\000\000\000\000\000\361o\000\000\000\000\000\000 \265\000\000\000\000\000\000\021%\001\000\000\000\000\0001\332\001\000\000\000\000\000B\377\002\000\000\000\000\000s\331\004\000\000\000\000\000\265\330\007\000\000\000\000\000(\262\f\000\000\000\000\000\335\212\024\000\000\000\000\000\005=!\000\000\000\000\000\342\3075\000\000\000\000\000\347\004W\000\000\000\000\000\311\314\214\000\000\000\000\000\260\321\343\000\000\000\000\000y\236p\001\000\000\000\000)pT\002\000\000\000\000\242\016\305\003\000\000\000\000\313~\031\006\000\000\000\000m\215\336\t\000\000\000\0008\f\370\017\000\000\000\000\245\231\326\031\000\000\000\000\335\245\316)\000\000\000\000\202?\245C\000\000\000\000_\345sm\000\000\000\000\341$\031\261\000\000\000\000@\n\215\036\001\000\000\000!/\246\317\001\000\000\000a93\356\002\000\000\000\202h\331\275\004\000\000\000\343\241\f\254\007\000\000\000e\n\346i\f\000\000\000H\254\362\025\024\000\000\000\255\266\330\177 \000\000\000\365b\313\2254\000\000\000\242\031\244\025U\000\000\000\227|o\253\211\000\000\0009\226\023\301\336\000\000\000\320\022\203lh\001\000\000\t\251\226-G\002\000\000\331\273\031\232\257\003\000\000\342d\260\307\366\005\000\000\273 \312a\246\t\000\000\235\205z)\235\017\000\000X\246D\213C\031\000\000\365+\277\264\340(\000\000M\322\003@$B\000\000B\376\302\364\004k\000\000\217\320\3064)\255\000\000\321\316\211).\030\001\000`\237P^W\305\001\0001n\332\207\205\335\002\000\221\r+\346\334\242\004\000\302{\005nb\200\007\000S\2110T?#\f\000\025\0056\302\241\243\023\000h\216f\026\341\306\037\000}\223\234\330\202j3\000\345!\003\357c1S\000b\265\237\307\346\233\206\000G\327\242\266J\315\331\000\251\214B~1i`\001\360c\3454|6:\002\231\360'\263\255\237\232\003\211T\r\350)\326\324\005\"E5\233\327uo\t\253\231B\203\001LD\017\315\336w\036\331\301\263\030xx\272\241\332\r\370'EW2\300\263\317\253@\275\317\354a\216\335\243h\002'\037\"B\255O\251"