diff options
| author | dnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-05-16 13:41:24 +0000 |
|---|---|---|
| committer | dnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-05-16 13:41:24 +0000 |
| commit | af6cf582ab31d98c61020c753edac5b09860d984 (patch) | |
| tree | 53e64ea80548c9626c93b624d83dfaf664a790d9 /gcc/real.c | |
| parent | 76ee6ef25ed246ce903c8a9bd5448d73992a103f (diff) | |
| download | gcc-af6cf582ab31d98c61020c753edac5b09860d984.tar.gz | |
2008-05-16 Doug Kwan <dougkwan@google.com>
* real.c (real_to_decimal, real_to_hexadecimal): Distinguish
QNaN & SNaN.
(real_from_string): Handle NaNs and Inf as approriate.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@135421 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/real.c')
| -rw-r--r-- | gcc/real.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/gcc/real.c b/gcc/real.c index ac3b7dc02ec..c4695cced91 100644 --- a/gcc/real.c +++ b/gcc/real.c @@ -1471,7 +1471,8 @@ real_to_decimal (char *str, const REAL_VALUE_TYPE *r_orig, size_t buf_size, return; case rvc_nan: /* ??? Print the significand as well, if not canonical? */ - strcpy (str, (r.sign ? "-NaN" : "+NaN")); + sprintf (str, "%c%cNaN", (r_orig->sign ? '-' : '+'), + (r_orig->signalling ? 'S' : 'Q')); return; default: gcc_unreachable (); @@ -1743,7 +1744,8 @@ real_to_hexadecimal (char *str, const REAL_VALUE_TYPE *r, size_t buf_size, return; case rvc_nan: /* ??? Print the significand as well, if not canonical? */ - strcpy (str, (r->sign ? "-NaN" : "+NaN")); + sprintf (str, "%c%cNaN", (r->sign ? '-' : '+'), + (r->signalling ? 'S' : 'Q')); return; default: gcc_unreachable (); @@ -1812,6 +1814,22 @@ real_from_string (REAL_VALUE_TYPE *r, const char *str) else if (*str == '+') str++; + if (!strncmp (str, "QNaN", 4)) + { + get_canonical_qnan (r, sign); + return 0; + } + else if (!strncmp (str, "SNaN", 4)) + { + get_canonical_snan (r, sign); + return 0; + } + else if (!strncmp (str, "Inf", 3)) + { + get_inf (r, sign); + return 0; + } + if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) { /* Hexadecimal floating point. */ |