Mercurial > hg > CbC > CbC_gcc
view libffi/testsuite/libffi.call/float2.c @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 04ced10e8804 |
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/* Area: ffi_call Purpose: Check return value long double. Limitations: none. PR: none. Originator: From the original ffitest.c */ /* { dg-do run { target { ! hppa*-*-hpux* } } } */ #include "ffitest.h" #include "float.h" #include <math.h> static long double ldblit(float f) { return (long double) (((long double) f)/ (long double) 3.0); } int main (void) { ffi_cif cif; ffi_type *args[MAX_ARGS]; void *values[MAX_ARGS]; float f; long double ld; args[0] = &ffi_type_float; values[0] = &f; /* Initialize the cif */ CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, &ffi_type_longdouble, args) == FFI_OK); f = 3.14159; #if 1 /* This is ifdef'd out for now. long double support under SunOS/gcc is pretty much non-existent. You'll get the odd bus error in library routines like printf(). */ printf ("%Lf\n", ldblit(f)); #endif ld = 666; ffi_call(&cif, FFI_FN(ldblit), &ld, values); #if 1 /* This is ifdef'd out for now. long double support under SunOS/gcc is pretty much non-existent. You'll get the odd bus error in library routines like printf(). */ printf ("%Lf, %Lf, %Lf, %Lf\n", ld, ldblit(f), ld - ldblit(f), LDBL_EPSILON); #endif /* These are not always the same!! Check for a reasonable delta */ if (fabsl(ld - ldblit(f)) < LDBL_EPSILON) puts("long double return value tests ok!"); else CHECK(0); exit(0); }