Add native_token module to sdk (#6192)

cli/src/input_parsers.rs

@@ -1,6 +1,6 @@
-use crate::sol_to_lamports;
 use clap::ArgMatches;
 use solana_sdk::{
+    native_token::sol_to_lamports,
     pubkey::Pubkey,
     signature::{read_keypair, Keypair, KeypairUtil},
 };

cli/src/lib.rs

@@ -9,11 +9,3 @@ pub mod stake;
 pub mod validator_info;
 pub mod vote;
 pub mod wallet;
-
-pub(crate) fn lamports_to_sol(lamports: u64) -> f64 {
-    lamports as f64 / 2u64.pow(34) as f64
-}
-
-pub(crate) fn sol_to_lamports(sol: f64) -> u64 {
-    (sol * 2u64.pow(34) as f64) as u64
-}

cli/src/wallet.rs

@@ -1,5 +1,5 @@
 use crate::{
-    display::println_name_value, input_parsers::*, input_validators::*, lamports_to_sol, stake::*,
+    display::println_name_value, input_parsers::*, input_validators::*, stake::*,
     validator_info::*, vote::*,
 };
 use chrono::prelude::*;
@@ -23,6 +23,7 @@ use solana_sdk::{
     instruction_processor_utils::DecodeError,
     loader_instruction,
     message::Message,
+    native_token::lamports_to_sol,
     pubkey::Pubkey,
     signature::{Keypair, KeypairUtil, Signature},
     system_instruction::SystemError,

sdk/src/lib.rs

@@ -10,6 +10,7 @@ pub mod instruction_processor_utils;
 pub mod loader_instruction;
 pub mod message;
 pub mod native_loader;
+pub mod native_token;
 pub mod packet;
 pub mod poh_config;
 pub mod pubkey;

sdk/src/native_token.rs

@@ -0,0 +1,12 @@
+/// There are 2^34 lamports in one sol
+pub const SOL_LAMPORTS: u64 = 17_179_869_184;
+
+/// Approximately convert fractional native tokens (lamports) into native tokens (sol)
+pub fn lamports_to_sol(lamports: u64) -> f64 {
+    lamports as f64 / SOL_LAMPORTS as f64
+}
+
+/// Approximately convert native tokens (sol) into fractional native tokens (lamports)
+pub fn sol_to_lamports(sol: f64) -> u64 {
+    (sol * SOL_LAMPORTS as f64) as u64
+}