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Diffstat (limited to 'test/builtins/Unit/floatdidf_test.c')
| -rw-r--r-- | test/builtins/Unit/floatdidf_test.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/test/builtins/Unit/floatdidf_test.c b/test/builtins/Unit/floatdidf_test.c new file mode 100644 index 000000000000..af3dacd4f38b --- /dev/null +++ b/test/builtins/Unit/floatdidf_test.c @@ -0,0 +1,137 @@ +//===-- floatdidf.c - Test __floatdidf ------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file tests __floatdidf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// + +#include "int_lib.h" +#include <float.h> +#include <stdio.h> + +// Returns: convert a to a double, rounding toward even. + +// Assumption: double is a IEEE 64 bit floating point type +// di_int is a 64 bit integral type + +// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm + +double __floatdidf(di_int a); + +int test__floatdidf(di_int a, double expected) +{ + double x = __floatdidf(a); + if (x != expected) + printf("error in __floatdidf(%llX) = %a, expected %a\n", a, x, expected); + return x != expected; +} + +char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0}; +char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0}; +char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; + +int main() +{ + if (test__floatdidf(0, 0.0)) + return 1; + + if (test__floatdidf(1, 1.0)) + return 1; + if (test__floatdidf(2, 2.0)) + return 1; + if (test__floatdidf(20, 20.0)) + return 1; + if (test__floatdidf(-1, -1.0)) + return 1; + if (test__floatdidf(-2, -2.0)) + return 1; + if (test__floatdidf(-20, -20.0)) + return 1; + + if (test__floatdidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62)) + return 1; + if (test__floatdidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62)) + return 1; + if (test__floatdidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62)) + return 1; + if (test__floatdidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62)) + return 1; + + if (test__floatdidf(0x8000008000000000LL, -0x1.FFFFFEp+62)) + return 1; + if (test__floatdidf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62)) + return 1; + if (test__floatdidf(0x8000010000000000LL, -0x1.FFFFFCp+62)) + return 1; + if (test__floatdidf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62)) + return 1; + + if (test__floatdidf(0x8000000000000000LL, -0x1.000000p+63)) + return 1; + if (test__floatdidf(0x8000000000000001LL, -0x1.000000p+63)) + return 1; + + if (test__floatdidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50)) + return 1; + + if (test__floatdidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50)) + return 1; + if (test__floatdidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50)) + return 1; + if (test__floatdidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50)) + return 1; + if (test__floatdidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50)) + return 1; + if (test__floatdidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50)) + return 1; + + if (test__floatdidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50)) + return 1; + if (test__floatdidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50)) + return 1; + if (test__floatdidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50)) + return 1; + if (test__floatdidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50)) + return 1; + if (test__floatdidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50)) + return 1; + + if (test__floatdidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57)) + return 1; + if (test__floatdidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57)) + return 1; + + return 0; +} |