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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2015-07-08 12:01:30 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@inria.fr> | 2015-07-08 12:01:30 +0200 |
| commit | ab1ddcd0d579d7e5760c6cfa84adbd55212c47e7 (patch) | |
| tree | 207e3b1e59da7247d95d28d6ffdd6f4e93bdfc4c /test/regression | |
| parent | 4148ee08387bf953bdbe69f7668597ec0bcccc29 (diff) | |
| download | compcert-kvx-ab1ddcd0d579d7e5760c6cfa84adbd55212c47e7.tar.gz compcert-kvx-ab1ddcd0d579d7e5760c6cfa84adbd55212c47e7.zip | |
More portable test for fres and fsqrte.
These instructions are approximate and produce different results on different processors. Just check the error bounds specified in the PPC ISA.
Diffstat (limited to 'test/regression')
| -rw-r--r-- | test/regression/Results/builtins-powerpc | 4 | ||||
| -rw-r--r-- | test/regression/builtins-powerpc.c | 13 | ||||
| -rw-r--r-- | test/regression/sections.c | 6 |
3 files changed, 16 insertions, 7 deletions
diff --git a/test/regression/Results/builtins-powerpc b/test/regression/Results/builtins-powerpc index ac4240a8..0fd07f69 100644 --- a/test/regression/Results/builtins-powerpc +++ b/test/regression/Results/builtins-powerpc @@ -8,8 +8,8 @@ fmsub(3.141590, 2.718000, 1.414000) = 7.124842 fabs(3.141590) = 3.141590 fabs(-3.141590) = 3.141590 fsqrt(3.141590) = 1.772453 -frsqrte(3.141590) = 0.564198 -fres(3.141590) = 0.318311 +frsqrte(3.141590) = OK +fres(3.141590) = OK fsel(3.141590, 2.718000, 1.414000) = 2.718000 fsel(-3.141590, 2.718000, 1.414000) = 1.414000 fcti(3.141590) = 3 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)); diff --git a/test/regression/sections.c b/test/regression/sections.c index 2e0e4e75..adf94e83 100644 --- a/test/regression/sections.c +++ b/test/regression/sections.c @@ -13,14 +13,14 @@ struct s { long long ll; }; -struct s x; /* normal absolute addressing */ +struct s x = {0, }; /* normal absolute addressing */ #pragma use_section SDATA y -struct s y; /* small data area */ +struct s y = {0, }; /* small data area */ #pragma section MYDATA ".mydata" ".mydata" far-data RW #pragma use_section MYDATA z -struct s z; /* far data area, relative addressing */ +struct s z = {0, }; /* far data area, relative addressing */ #define TEST(msg,ty,x,v1,v2,v3) \ x = v1; \ |