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#include <gtest/gtest.h>
#include <cstdint>
#include <iomanip>
#include <fp16.h>
TEST(FP32_TO_BITS, positive) {
for (uint32_t bits = UINT32_C(0x00000000); bits <= UINT32_C(0x7FFFFFFF); bits++) {
float value;
memcpy(&value, &bits, sizeof(value));
ASSERT_EQ(bits, fp32_to_bits(value)) <<
std::hex << std::uppercase << std::setfill('0') <<
"BITS = 0x" << std::setw(8) << bits << ", " <<
"BITCAST(VALUE) = 0x" << std::setw(8) << fp32_to_bits(value);
}
}
TEST(FP32_TO_BITS, negative) {
for (uint32_t bits = UINT32_C(0xFFFFFFFF); bits >= UINT32_C(0x80000000); bits--) {
float value;
memcpy(&value, &bits, sizeof(value));
ASSERT_EQ(bits, fp32_to_bits(value)) <<
std::hex << std::uppercase << std::setfill('0') <<
"BITS = 0x" << std::setw(8) << bits << ", " <<
"BITCAST(VALUE) = 0x" << std::setw(8) << fp32_to_bits(value);
}
}
TEST(FP32_FROM_BITS, positive) {
for (uint32_t bits = UINT32_C(0x00000000); bits <= UINT32_C(0x7FFFFFFF); bits++) {
const float value = fp32_from_bits(bits);
uint32_t bitcast;
memcpy(&bitcast, &value, sizeof(bitcast));
ASSERT_EQ(bits, bitcast) <<
std::hex << std::uppercase << std::setfill('0') <<
"BITS = 0x" << std::setw(8) << bits << ", " <<
"VALUE = 0x" << std::setw(8) << bitcast;
}
}
TEST(FP32_FROM_BITS, negative) {
for (uint32_t bits = UINT32_C(0xFFFFFFFF); bits >= UINT32_C(0x80000000); bits--) {
const float value = fp32_from_bits(bits);
uint32_t bitcast;
memcpy(&bitcast, &value, sizeof(bitcast));
ASSERT_EQ(bits, bitcast) <<
std::hex << std::uppercase << std::setfill('0') <<
"BITS = 0x" << std::setw(8) << bits << ", " <<
"VALUE = 0x" << std::setw(8) << bitcast;
}
}
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