diff options
Diffstat (limited to 'gcc/c-cppbuiltin.c')
| -rw-r--r-- | gcc/c-cppbuiltin.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/gcc/c-cppbuiltin.c b/gcc/c-cppbuiltin.c index 1619279cc64..3e01dc191fa 100644 --- a/gcc/c-cppbuiltin.c +++ b/gcc/c-cppbuiltin.c @@ -1,5 +1,5 @@ /* Define builtin-in macros for the C family front ends. - Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 + Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. This file is part of GCC. @@ -285,7 +285,7 @@ builtin_define_decimal_float_constants (const char *name_prefix, /* Compute the minimum representable value. */ sprintf (name, "__%s_MIN__", name_prefix); - sprintf (buf, "1E%d%s", fmt->emin, suffix); + sprintf (buf, "1E%d%s", fmt->emin - 1, suffix); builtin_define_with_value (name, buf, 0); /* Compute the maximum representable value. */ @@ -298,8 +298,9 @@ builtin_define_decimal_float_constants (const char *name_prefix, *p++ = '.'; } *p = 0; - /* fmt->p plus 1, to account for the decimal point. */ - sprintf (&buf[fmt->p + 1], "E%d%s", fmt->emax, suffix); + /* fmt->p plus 1, to account for the decimal point and fmt->emax + minus 1 because the digits are nines, not 1.0. */ + sprintf (&buf[fmt->p + 1], "E%d%s", fmt->emax - 1, suffix); builtin_define_with_value (name, buf, 0); /* Compute epsilon (the difference between 1 and least value greater @@ -308,8 +309,8 @@ builtin_define_decimal_float_constants (const char *name_prefix, sprintf (buf, "1E-%d%s", fmt->p - 1, suffix); builtin_define_with_value (name, buf, 0); - /* Minimum denormalized positive decimal value. */ - sprintf (name, "__%s_DEN__", name_prefix); + /* Minimum subnormal positive decimal value. */ + sprintf (name, "__%s_SUBNORMAL_MIN__", name_prefix); p = buf; for (digits = fmt->p; digits > 1; digits--) { @@ -318,7 +319,7 @@ builtin_define_decimal_float_constants (const char *name_prefix, *p++ = '.'; } *p = 0; - sprintf (&buf[fmt->p], "1E%d%s", fmt->emin, suffix); + sprintf (&buf[fmt->p], "1E%d%s", fmt->emin - 1, suffix); builtin_define_with_value (name, buf, 0); } |