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Diffstat (limited to 'test/Unit/floattidf_test.c')
-rw-r--r-- | test/Unit/floattidf_test.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/test/Unit/floattidf_test.c b/test/Unit/floattidf_test.c new file mode 100644 index 000000000000..fff51aee228b --- /dev/null +++ b/test/Unit/floattidf_test.c @@ -0,0 +1,178 @@ +//===-- floattidf.c - Test __floattidf ------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file tests __floattidf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// + +#if __x86_64 + +#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 +// ti_int is a 64 bit integral type + +// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm + +double __floattidf(ti_int a); + +int test__floattidf(ti_int a, double expected) +{ + double x = __floattidf(a); + if (x != expected) + { + twords at; + at.all = a; + printf("error in __floattidf(0x%.16llX%.16llX) = %a, expected %a\n", + at.s.high, at.s.low, x, expected); + } + return x != expected; +} + +char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; +char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0}; +char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; + +#endif + +int main() +{ +#if __x86_64 + if (test__floattidf(0, 0.0)) + return 1; + + if (test__floattidf(1, 1.0)) + return 1; + if (test__floattidf(2, 2.0)) + return 1; + if (test__floattidf(20, 20.0)) + return 1; + if (test__floattidf(-1, -1.0)) + return 1; + if (test__floattidf(-2, -2.0)) + return 1; + if (test__floattidf(-20, -20.0)) + return 1; + + if (test__floattidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62)) + return 1; + if (test__floattidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62)) + return 1; + if (test__floattidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62)) + return 1; + if (test__floattidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62)) + return 1; + + if (test__floattidf(make_ti(0x8000008000000000LL, 0), -0x1.FFFFFEp+126)) + return 1; + if (test__floattidf(make_ti(0x8000000000000800LL, 0), -0x1.FFFFFFFFFFFFEp+126)) + return 1; + if (test__floattidf(make_ti(0x8000010000000000LL, 0), -0x1.FFFFFCp+126)) + return 1; + if (test__floattidf(make_ti(0x8000000000001000LL, 0), -0x1.FFFFFFFFFFFFCp+126)) + return 1; + + if (test__floattidf(make_ti(0x8000000000000000LL, 0), -0x1.000000p+127)) + return 1; + if (test__floattidf(make_ti(0x8000000000000001LL, 0), -0x1.000000p+127)) + return 1; + + if (test__floattidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50)) + return 1; + + if (test__floattidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50)) + return 1; + if (test__floattidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50)) + return 1; + if (test__floattidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50)) + return 1; + if (test__floattidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50)) + return 1; + if (test__floattidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50)) + return 1; + + if (test__floattidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50)) + return 1; + if (test__floattidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50)) + return 1; + if (test__floattidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50)) + return 1; + if (test__floattidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50)) + return 1; + if (test__floattidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50)) + return 1; + + if (test__floattidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floattidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57)) + return 1; + if (test__floattidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floattidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floattidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floattidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floattidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floattidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floattidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floattidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floattidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57)) + return 1; + if (test__floattidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57)) + return 1; + if (test__floattidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57)) + return 1; + if (test__floattidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57)) + return 1; + if (test__floattidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57)) + return 1; + + if (test__floattidf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496Dp+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496Ep+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496Ep+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496Ep+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496Ep+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496Ep+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496Ep+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496Ep+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496Ep+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496Ep+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496Fp+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496Fp+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496Fp+121)) + return 1; + if (test__floattidf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121)) + return 1; +#endif + return 0; +} |