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#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <stdint.h>
#ifdef COMPILER_RT_HAS_FLOAT16
#define TYPE_FP16 _Float16
#else
#define TYPE_FP16 uint16_t
#endif
enum EXPECTED_RESULT {
LESS_0, LESS_EQUAL_0, EQUAL_0, GREATER_0, GREATER_EQUAL_0, NEQUAL_0
};
static inline TYPE_FP16 fromRep16(uint16_t x)
{
#ifdef COMPILER_RT_HAS_FLOAT16
TYPE_FP16 ret;
memcpy(&ret, &x, sizeof(ret));
return ret;
#else
return x;
#endif
}
static inline float fromRep32(uint32_t x)
{
float ret;
memcpy(&ret, &x, 4);
return ret;
}
static inline double fromRep64(uint64_t x)
{
double ret;
memcpy(&ret, &x, 8);
return ret;
}
#if __LDBL_MANT_DIG__ == 113
static inline long double fromRep128(uint64_t hi, uint64_t lo)
{
__uint128_t x = ((__uint128_t)hi << 64) + lo;
long double ret;
memcpy(&ret, &x, 16);
return ret;
}
#endif
static inline uint16_t toRep16(TYPE_FP16 x)
{
#ifdef COMPILER_RT_HAS_FLOAT16
uint16_t ret;
memcpy(&ret, &x, sizeof(ret));
return ret;
#else
return x;
#endif
}
static inline uint32_t toRep32(float x)
{
uint32_t ret;
memcpy(&ret, &x, 4);
return ret;
}
static inline uint64_t toRep64(double x)
{
uint64_t ret;
memcpy(&ret, &x, 8);
return ret;
}
#if __LDBL_MANT_DIG__ == 113
static inline __uint128_t toRep128(long double x)
{
__uint128_t ret;
memcpy(&ret, &x, 16);
return ret;
}
#endif
static inline int compareResultH(TYPE_FP16 result,
uint16_t expected)
{
uint16_t rep = toRep16(result);
if (rep == expected){
return 0;
}
// test other possible NaN representation(signal NaN)
else if (expected == 0x7e00U){
if ((rep & 0x7c00U) == 0x7c00U &&
(rep & 0x3ffU) > 0){
return 0;
}
}
return 1;
}
static inline int compareResultF(float result,
uint32_t expected)
{
uint32_t rep = toRep32(result);
if (rep == expected){
return 0;
}
// test other possible NaN representation(signal NaN)
else if (expected == 0x7fc00000U){
if ((rep & 0x7f800000U) == 0x7f800000U &&
(rep & 0x7fffffU) > 0){
return 0;
}
}
return 1;
}
static inline int compareResultD(double result,
uint64_t expected)
{
uint64_t rep = toRep64(result);
if (rep == expected){
return 0;
}
// test other possible NaN representation(signal NaN)
else if (expected == 0x7ff8000000000000UL){
if ((rep & 0x7ff0000000000000UL) == 0x7ff0000000000000UL &&
(rep & 0xfffffffffffffUL) > 0){
return 0;
}
}
return 1;
}
#if __LDBL_MANT_DIG__ == 113
// return 0 if equal
// use two 64-bit integers instead of one 128-bit integer
// because 128-bit integer constant can't be assigned directly
static inline int compareResultLD(long double result,
uint64_t expectedHi,
uint64_t expectedLo)
{
__uint128_t rep = toRep128(result);
uint64_t hi = rep >> 64;
uint64_t lo = rep;
if (hi == expectedHi && lo == expectedLo){
return 0;
}
// test other possible NaN representation(signal NaN)
else if (expectedHi == 0x7fff800000000000UL && expectedLo == 0x0UL){
if ((hi & 0x7fff000000000000UL) == 0x7fff000000000000UL &&
((hi & 0xffffffffffffUL) > 0 || lo > 0)){
return 0;
}
}
return 1;
}
#endif
static inline int compareResultCMP(int result,
enum EXPECTED_RESULT expected)
{
switch(expected){
case LESS_0:
if (result < 0)
return 0;
break;
case LESS_EQUAL_0:
if (result <= 0)
return 0;
break;
case EQUAL_0:
if (result == 0)
return 0;
break;
case NEQUAL_0:
if (result != 0)
return 0;
break;
case GREATER_EQUAL_0:
if (result >= 0)
return 0;
break;
case GREATER_0:
if (result > 0)
return 0;
break;
default:
return 1;
}
return 1;
}
static inline char *expectedStr(enum EXPECTED_RESULT expected)
{
switch(expected){
case LESS_0:
return "<0";
case LESS_EQUAL_0:
return "<=0";
case EQUAL_0:
return "=0";
case NEQUAL_0:
return "!=0";
case GREATER_EQUAL_0:
return ">=0";
case GREATER_0:
return ">0";
default:
return "";
}
return "";
}
static inline TYPE_FP16 makeQNaN16(void)
{
return fromRep16(0x7e00U);
}
static inline float makeQNaN32(void)
{
return fromRep32(0x7fc00000U);
}
static inline double makeQNaN64(void)
{
return fromRep64(0x7ff8000000000000UL);
}
#if __LDBL_MANT_DIG__ == 113
static inline long double makeQNaN128(void)
{
return fromRep128(0x7fff800000000000UL, 0x0UL);
}
#endif
static inline TYPE_FP16 makeNaN16(uint16_t rand)
{
return fromRep16(0x7c00U | (rand & 0x7fffU));
}
static inline float makeNaN32(uint32_t rand)
{
return fromRep32(0x7f800000U | (rand & 0x7fffffU));
}
static inline double makeNaN64(uint64_t rand)
{
return fromRep64(0x7ff0000000000000UL | (rand & 0xfffffffffffffUL));
}
#if __LDBL_MANT_DIG__ == 113
static inline long double makeNaN128(uint64_t rand)
{
return fromRep128(0x7fff000000000000UL | (rand & 0xffffffffffffUL), 0x0UL);
}
#endif
static inline TYPE_FP16 makeInf16(void)
{
return fromRep16(0x7c00U);
}
static inline float makeInf32(void)
{
return fromRep32(0x7f800000U);
}
static inline float makeNegativeInf32(void)
{
return fromRep32(0xff800000U);
}
static inline double makeInf64(void)
{
return fromRep64(0x7ff0000000000000UL);
}
static inline double makeNegativeInf64(void)
{
return fromRep64(0xfff0000000000000UL);
}
#if __LDBL_MANT_DIG__ == 113
static inline long double makeInf128(void)
{
return fromRep128(0x7fff000000000000UL, 0x0UL);
}
static inline long double makeNegativeInf128(void)
{
return fromRep128(0xffff000000000000UL, 0x0UL);
}
#endif
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