Mercurial > octave
diff liboctave/util/lo-utils.h @ 28849:8b0675c2cfe0
Add functions to check for integer overflow on multiplication (bug #59094).
* liboctave/wrappers/intprops-wrappers.c, intprops-wrappers.h: New files with
functions to wrap around gnulib macros.
* liboctave/wrappers/module.mk: Add new files to lists.
* bootstrap.conf: Add gnulib module "intprops".
* liboctave/util/lo-utils.cc, lo-utils.h (int_multiply_overflow): Add new
(overloaded) functions to check for integer overflow on multiplication.
* libinterp/dldfcn/__ode15__.cc (IDA::set_up): Check if multiplication would
overflow.
| author | Markus Mützel <markus.muetzel@gmx.de> |
|---|---|
| date | Sat, 19 Sep 2020 12:09:57 +0200 |
| parents | a2cb3dec4bc5 |
| children | 6b3faa844395 |
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--- a/liboctave/util/lo-utils.h Wed Sep 30 17:18:50 2020 -0400 +++ b/liboctave/util/lo-utils.h Sat Sep 19 12:09:57 2020 +0200 @@ -123,6 +123,21 @@ template <> void write_value (std::ostream& os, const Complex& value); template <> void write_value (std::ostream& os, const float& value); template <> void write_value (std::ostream& os, const FloatComplex& value); + + namespace math + { + bool int_multiply_overflow (int a, int b); + bool int_multiply_overflow (long int a, long int b); +#if defined (OCTAVE_HAVE_LONG_LONG_INT) + bool int_multiply_overflow (long long int a, long long int b); +#endif + bool int_multiply_overflow (unsigned int a, unsigned int b); + bool int_multiply_overflow (unsigned long int a, unsigned long int b); +#if defined (OCTAVE_HAVE_UNSIGNED_LONG_LONG_INT) + bool int_multiply_overflow (unsigned long long int a, + unsigned long long int b); +#endif + } } OCTAVE_DEPRECATED (7, "use 'octave::read_value<T>' instead")