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// RUN: %clang -D_TESTINGUTILS_TEST %s -o %t
// RUN: %t | FileCheck %s
#include <stdint.h>
int printf(const char *fmt, ...);
void print_int(uint64_t val);
#define TYPED_PRINT(_name_type, _arg_type) \
void print_ ## _name_type(_arg_type val) { print_int(val); }
TYPED_PRINT(i1, uint8_t)
TYPED_PRINT(i8, uint8_t)
TYPED_PRINT(i16, uint16_t)
TYPED_PRINT(i32, uint32_t)
TYPED_PRINT(i64, uint64_t)
// This is a workaround to hide the "%c" only format string from the compiler --
// llvm-gcc can optimize this into putchar even at -O0, and the LLVM JIT doesn't
// recognize putchar() as a valid external function.
char *char_format_string = "%c";
void print_int(uint64_t val) {
uint64_t cur = 1;
// effectively do a log (can't call log because it returns floats)
// do the nasty divide to prevent overflow
while (cur <= val / 10)
cur *= 10;
while (cur) {
int digit = val / cur;
printf(char_format_string, digit + '0');
val = val % cur;
cur /= 10;
}
printf(char_format_string, '\n');
}
#ifdef _TESTINGUTILS_TEST
int main(int argc, char *argv[])
{
print_i64(0xf000000000000064);
// CHECK: 17293822569102704740
print_i64(0x7000000000000064);
// CHECK: 8070450532247928932
print_i32(0xf0000032);
// CHECK: 4026531890
print_i32(0x70000032);
// CHECK: 1879048242
print_i16(0xf016);
// CHECK: 61462
print_i16(0x7016);
// CHECK: 28694
print_i8(0xf8);
// CHECK: 248
print_i8(0x78);
// CHECK: 120
printf("print_i1(0)\n");
print_i1(0);
// CHECK: i1(0)
// CHECK_NEXT: 0
printf("print_i1(1)\n");
print_i1(1);
// CHECK: i1(1)
// CHECK_NEXT: 1
}
#endif
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