diff options
Diffstat (limited to 'runtime/tests/math/div64.c')
| -rw-r--r-- | runtime/tests/math/div64.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/runtime/tests/math/div64.c b/runtime/tests/math/div64.c index 61f4e843..ed033d5b 100644 --- a/runtime/tests/math/div64.c +++ b/runtime/tests/math/div64.c @@ -1,7 +1,9 @@ /* test of 64-bit division */ #include "runtime.h" -#define LLONG_MAX 9223372036854775807LL -#define LLONG_MIN (-LLONG_MAX - 1LL) +#define LLONG_MAX 0x7fffffffffffffffLL +#ifndef LLONG_MIN +#define LLONG_MIN 0x8000000000000000LL +#endif /* This tests a lot of edge conditions.*/ /* Then it does 10 million random divisions, comparing the result */ @@ -87,11 +89,11 @@ int main() div2 = x/y; mod2 = x%y; if (div1 != div2) { - printf ("%lld/%lld was %lld and should have been %lld\n", x,y,div1,div2); + printf ("%lld/%lld (%llx/%llx) was %lld and should have been %lld\n", x,y,x,y,div1,div2); exit (-1); } if (mod1 != mod2) { - printf ("%lld\%%lld was %lld and should have been %lld\n", x,y,mod1,mod2); + printf ("%lld\%%%lld (%llx/%llx) was %lld and should have been %lld\n", x,y,x,y,mod1,mod2); exit (-1); } } @@ -102,11 +104,11 @@ int main() div2 = x/y; mod2 = x%y; if (div1 != div2) { - printf ("%lld/%lld was %lld and should have been %lld\n", x,y,div1,div2); + printf ("%lld/%lld (%llx/%llx) was %lld and should have been %lld\n", x,y,x,y,div1,div2); exit (-1); } if (mod1 != mod2) { - printf ("%lld\%%lld was %lld and should have been %lld\n", x,y,mod1,mod2); + printf ("%lld\%%%lld (%llx/%llx) was %lld and should have been %lld\n", x,y,x,y,mod1,mod2); exit (-1); } } @@ -117,8 +119,8 @@ int main() mod1 = _stp_mod64(&error, x, y); #ifdef __LP64__ if (x == LLONG_MIN && y == -1) { - if (div1 != 0) { - printf ("%lld/%lld was %lld and should have been 0 (overflow)\n", x,y,div1); + if (div1 != LLONG_MIN) { + printf ("%lld/%lld was %lld and should have been %lld (overflow)\n", x,y,div1,LLONG_MIN); exit(-1); } continue; @@ -131,7 +133,7 @@ int main() exit (-1); } if (mod1 != mod2) { - printf ("%lld\%%lld was %lld and should have been %lld\n", x,y,mod1,mod2); + printf ("%lld\%%%lld was %lld and should have been %lld\n", x,y,mod1,mod2); exit (-1); } } @@ -146,13 +148,13 @@ int main() exit (-1); } if (mod1 != mod2) { - printf ("%lld\%%lld was %lld and should have been %lld\n", x,y,mod1,mod2); + printf ("%lld\%%%lld was %lld and should have been %lld\n", x,y,mod1,mod2); exit (-1); } } } - /* now do ten million random divisions and mods */ + /* just for fun, do ten million random divisions and mods */ for (i = 0; i < 10000000; i++) { x = mrand48(); y = mrand48(); @@ -171,7 +173,7 @@ int main() exit (-1); } if (mod1 != mod2) { - printf ("%lld\%%lld was %lld and should have been %lld\n", x,y,mod1,mod2); + printf ("%lld\%%%lld was %lld and should have been %lld\n", x,y,mod1,mod2); exit (-1); } } |