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Red Hat Bugzilla – Attachment 1696356 Details for
Bug 1844910
valgrind misexecutes pow() on aarch64
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new test program
test_fma.c (text/x-csrc), 543 bytes, created by
Tom Lane
on 2020-06-09 16:42:23 UTC
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Description:
new test program
Filename:
MIME Type:
Creator:
Tom Lane
Created:
2020-06-09 16:42:23 UTC
Size:
543 bytes
patch
obsolete
>#include <math.h> >#include <stdint.h> >#include <stdio.h> >#include <stdlib.h> > >static void >print_float(const char *ident, double x) >{ > union > { > double f; > uint64_t i; > } u; > > u.f = x; > printf("%s = %016lx = %.17g\n", ident, u.i, x); >} > >int >main(int argc, char **argv) >{ > double x = strtod(argv[1], NULL); > double y = strtod(argv[2], NULL); > double z = strtod(argv[3], NULL); > double r; > > print_float("x", x); > print_float("y", y); > print_float("z", z); > > r = __builtin_fma (x, y, -z); > > print_float("r", r); > > return 0; >}
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