diff options
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 34941e0..bdb8a58 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -5048,6 +5048,13 @@ builtin_define_float_constants (name_prefix, fp_suffix, type) sprintf (name, "__%s_EPSILON__", name_prefix); sprintf (buf, "0x1p%d", (1 - mant_dig) * log2_b); builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix); + + /* For C++ std::numeric_limits<T>::denorm_min. The minimum denormalized + positive floating-point number, b**(min_exp-p). Winds up being zero + for targets that don't support denormals. */ + sprintf (name, "__%s_DENORM_MIN__", name_prefix); + sprintf (buf, "0x1p%d", (min_exp - mant_dig) * log2_b); + builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix); } /* Hook that registers front end and target-specific built-ins. */ |