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| author | Janne Blomqvist <jb@gcc.gnu.org> | 2011-04-29 18:58:20 +0300 |
|---|---|---|
| committer | Janne Blomqvist <jb@gcc.gnu.org> | 2011-04-29 18:58:20 +0300 |
| commit | d785f6a3942dce76df9d59fc90419bb15402ae36 (patch) | |
| tree | 9a9214a0b0b7510c7bf5329a0be55a09ada5bd0d /libgfortran/io | |
| parent | f4c31037a235659024062506d8e07640a7165662 (diff) | |
| download | gcc-d785f6a3942dce76df9d59fc90419bb15402ae36.zip gcc-d785f6a3942dce76df9d59fc90419bb15402ae36.tar.gz gcc-d785f6a3942dce76df9d59fc90419bb15402ae36.tar.bz2 | |
PR 48488 Fix comments
From-SVN: r173169
Diffstat (limited to 'libgfortran/io')
| -rw-r--r-- | libgfortran/io/write.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/libgfortran/io/write.c b/libgfortran/io/write.c index bf02ad8..40f4112 100644 --- a/libgfortran/io/write.c +++ b/libgfortran/io/write.c @@ -1456,10 +1456,15 @@ set_fnode_default (st_parameter_dt *dtp, fnode *f, int length) break; } } -/* Output a real number with default format. - This is 1PG14.7E2 for REAL(4), 1PG23.15E3 for REAL(8), - 1PG28.19E4 for REAL(10) and 1PG43.34E4 for REAL(16). */ -// FX -- FIXME: should we change the default format for __float128-real(16)? + +/* Output a real number with default format. This is 1PG16.9E2 for + REAL(4), 1PG25.17E3 for REAL(8), 1PG30.21E4 for REAL(10) and + 1PG45.36E4 for REAL(16). The exception is that the Fortran standard + requires outputting an extra digit when the scale factor is 1 and + when the magnitude of the value is such that E editing is + used. However, gfortran compensates for this, and thus for list + formatted the same number of significant digits is generated both + when using F and E editing. */ void write_real (st_parameter_dt *dtp, const char *source, int length) @@ -1472,6 +1477,8 @@ write_real (st_parameter_dt *dtp, const char *source, int length) dtp->u.p.scale_factor = org_scale; } +/* Similar to list formatted REAL output, for kPG0 where k > 0 we + compensate for the extra digit. */ void write_real_g0 (st_parameter_dt *dtp, const char *source, int length, int d) |