#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
double atof(char *);
int /*<<< orphan*/ printf(char *, double);
int main() {
  printf("%f\n", atof("0.2e3"));
  printf("%f\n", atof("1.04"));
  printf("%f\n", atof("0e41"));
  printf("%f\n", atof("7e2"));
  printf("%f\n", atof("1e-1"));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xece(%rip),%rdi
call   1030 <atof@plt>
lea    0xebe(%rip),%rdi
call   1040 <printf@plt>
lea    0xebc(%rip),%rdi
call   1030 <atof@plt>
lea    0xea6(%rip),%rdi
call   1040 <printf@plt>
lea    0xea9(%rip),%rdi
call   1030 <atof@plt>
lea    0xe8e(%rip),%rdi
call   1040 <printf@plt>
lea    0xe96(%rip),%rdi
call   1030 <atof@plt>
lea    0xe76(%rip),%rdi
call   1040 <printf@plt>
lea    0xe82(%rip),%rdi
call   1030 <atof@plt>
lea    0xe5e(%rip),%rdi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xedc(%rip),%rdi
call   1030 <atof@plt>
lea    0xecc(%rip),%rbx
mov    %rbx,%rdi
call   1040 <printf@plt>
lea    0xec7(%rip),%rdi
call   1030 <atof@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
lea    0xeb8(%rip),%rdi
call   1030 <atof@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
lea    0xea9(%rip),%rdi
call   1030 <atof@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
lea    0xe99(%rip),%rdi
call   1030 <atof@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [4 x i8] c"%f\0A\00"
@.str.1 = [6 x i8] c"0.2e3\00"
@.str.2 = [5 x i8] c"1.04\00"
@.str.3 = [5 x i8] c"0e41\00"
@.str.4 = [4 x i8] c"7e2\00"
@.str.5 = [5 x i8] c"1e-1\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call double @atof(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %2)
%4 = call double @atof(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %4)
%6 = call double @atof(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %6)
%8 = call double @atof(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0))
%9 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %8)
%10 = call double @atof(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.5, i64 0, i64 0))
%11 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %10)
ret i32 0
}

LLVM IR (-O2):
@.str = [4 x i8] c"%f\0A\00"
@.str.1 = [6 x i8] c"0.2e3\00"
@.str.2 = [5 x i8] c"1.04\00"
@.str.3 = [5 x i8] c"0e41\00"
@.str.4 = [4 x i8] c"7e2\00"
@.str.5 = [5 x i8] c"1e-1\00"
define i32 @main() {
%1 = tail call double @atof(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0))
%2 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %1)
%3 = tail call double @atof(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%4 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %3)
%5 = tail call double @atof(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%6 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %5)
%7 = tail call double @atof(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0))
%8 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %7)
%9 = tail call double @atof(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.5, i64 0, i64 0))
%10 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), double %9)
ret i32 0
}