diff --git a/core/math.odin b/core/math.odin
index 1de457222..61a33bdeb 100644
--- a/core/math.odin
+++ b/core/math.odin
@@ -46,10 +46,6 @@ bit_reverse :: proc(b: u16) -> u16 #foreign __llvm_core "llvm.bitreverse.i16";
 bit_reverse :: proc(b: u32) -> u32 #foreign __llvm_core "llvm.bitreverse.i32";
 bit_reverse :: proc(b: u64) -> u64 #foreign __llvm_core "llvm.bitreverse.i64";
 
-byte_swap :: proc(b: u16) -> u16 #foreign __llvm_core "llvm.bswap.i16";
-byte_swap :: proc(b: u32) -> u32 #foreign __llvm_core "llvm.bswap.i32";
-byte_swap :: proc(b: u64) -> u64 #foreign __llvm_core "llvm.bswap.i64";
-
 fmuladd :: proc(a, b, c: f32) -> f32 #foreign __llvm_core "llvm.fmuladd.f32";
 fmuladd :: proc(a, b, c: f64) -> f64 #foreign __llvm_core "llvm.fmuladd.f64";