Mercurial > cpython-lru_cache-weakref
diff Modules/mathmodule.c @ 498:56bb1067a880 legacy-trunk
Improve error handling.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Mon, 16 Dec 1991 15:44:24 +0000 |
| parents | 64bc8a284fb3 |
| children | 9276b3ee3936 |
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--- a/Modules/mathmodule.c Mon Dec 16 15:43:47 1991 +0000 +++ b/Modules/mathmodule.c Mon Dec 16 15:44:24 1991 +0000 @@ -35,6 +35,26 @@ #include <math.h> +#ifdef HUGE_VAL +#define CHECK(x) if (errno != 0) ; \ + else if (-HUGE_VAL <= (x) && (x) <= HUGE_VAL) ; \ + else errno = ERANGE +#else +#define CHECK(x) /* Don't know how to check */ +#endif + +static object * +math_error() +{ + if (errno == EDOM) + err_setstr(ValueError, "math domain error"); + else if (errno == ERANGE) + err_setstr(OverflowError, "math range error"); + else + err_errno(RuntimeError); + return NULL; +} + static object * math_1(args, func) object *args; @@ -45,8 +65,9 @@ return NULL; errno = 0; x = (*func)(x); + CHECK(x); if (errno != 0) - return err_errno(RuntimeError); + return math_error(); else return newfloatobject(x); } @@ -61,8 +82,9 @@ return NULL; errno = 0; x = (*func)(x, y); + CHECK(x); if (errno != 0) - return err_errno(RuntimeError); + return math_error(); else return newfloatobject(x); } @@ -120,8 +142,9 @@ return NULL; errno = 0; x = frexp(x, &i); + CHECK(x); if (errno != 0) - return err_errno(RuntimeError); + return math_error(); v = newtupleobject(2); if (v != NULL) { settupleitem(v, 0, newfloatobject(x)); @@ -145,8 +168,9 @@ return NULL; errno = 0; x = ldexp(x, (int)y); + CHECK(x); if (errno != 0) - return err_errno(RuntimeError); + return math_error(); else return newfloatobject(x); } @@ -162,8 +186,9 @@ return NULL; errno = 0; x = modf(x, &y); + CHECK(x); if (errno != 0) - return err_errno(RuntimeError); + return math_error(); v = newtupleobject(2); if (v != NULL) { settupleitem(v, 0, newfloatobject(x));