1 #include "double_conversion.h" 2 #include <math.h> 3 #include <stdio.h> 4 5 static const double testvalues[] = { 6 0.0, -0.0, 0.1, -0.1, 7 M_PI, -M_PI, 123456.789, -123456.789, 8 INFINITY, -INFINITY, NAN, INFINITY - INFINITY, 9 1e38, -1e38, 1e39, -1e39, 10 1e-38, -1e-38, 1e-39, -1e-39, 11 3.14159e-37,-3.14159e-37, 3.14159e-43, -3.14159e-43, 12 1e-60, -1e-60, 1e-45, -1e-45, 13 0.99999999999999, -0.99999999999999, 127.999999999999, -127.999999999999 14 }; 15 16 #define TESTVALUES_COUNT (sizeof(testvalues)/sizeof(testvalues[0])) 17 18 int main() 19 { 20 int status = 0; 21 int i; 22 for (i = 0; i < TESTVALUES_COUNT; i++) 23 { 24 double orig = testvalues[i]; 25 float expected_float = (float)orig; 26 double expected_double = (double)expected_float; 27 28 float got_float = double_to_float(*(uint64_t*)&orig); 29 uint64_t got_double = float_to_double(got_float); 30 31 uint32_t e1 = *(uint32_t*)&expected_float; 32 uint32_t g1 = *(uint32_t*)&got_float; 33 uint64_t e2 = *(uint64_t*)&expected_double; 34 uint64_t g2 = got_double; 35 36 if (g1 != e1) 37 { 38 printf("%3d double_to_float fail: %08x != %08x\n", i, g1, e1); 39 status = 1; 40 } 41 42 if (g2 != e2) 43 { 44 printf("%3d float_to_double fail: %016llx != %016llx\n", i, 45 (unsigned long long)g2, 46 (unsigned long long)e2); 47 status = 1; 48 } 49 } 50 51 return status; 52 } 53 54 55 56 57
