diff options
Diffstat (limited to 'test/regression/builtins-powerpc.c')
| -rw-r--r-- | test/regression/builtins-powerpc.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/test/regression/builtins-powerpc.c b/test/regression/builtins-powerpc.c index 17d4d3c5..acffa435 100644 --- a/test/regression/builtins-powerpc.c +++ b/test/regression/builtins-powerpc.c @@ -1,6 +1,13 @@ /* Fun with builtins */ #include <stdio.h> +#include <math.h> + +char * check_relative_error(double exact, double actual, double precision) +{ + double relative_error = (actual - exact) / exact; + return fabs(relative_error) <= precision ? "OK" : "ERROR"; +} int main(int argc, char ** argv) { @@ -22,8 +29,10 @@ int main(int argc, char ** argv) printf("fabs(%f) = %f\n", a, __builtin_fabs(a)); printf("fabs(%f) = %f\n", -a, __builtin_fabs(-a)); printf("fsqrt(%f) = %f\n", a, __builtin_fsqrt(a)); - printf("frsqrte(%f) = %f\n", a, __builtin_frsqrte(a)); - printf("fres(%f) = %f\n", a, __builtin_fres(a)); + printf("frsqrte(%f) = %s\n", + a, check_relative_error(1.0 / sqrt(a), __builtin_frsqrte(a), 1./32.)); + printf("fres(%f) = %s\n", + a, check_relative_error(1.0 / a, __builtin_fres(a), 1./256.)); printf("fsel(%f, %f, %f) = %f\n", a, b, c, __builtin_fsel(a, b, c)); printf("fsel(%f, %f, %f) = %f\n", -a, b, c, __builtin_fsel(-a, b, c)); printf("fcti(%f) = %d\n", a, __builtin_fcti(a)); |