Mercurial > hg > octave-lojdl > gnulib-hg
changeset 16651:6c0da1a4068d
Fix some comments.
* lib/expl.c: Fix an ambiguous comment.
* lib/expm1.c: Likewise.
* lib/expm1l.c: Likewise.
* lib/exp2.c: Likewise.
* lib/exp2l.c: Likewise.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Sat, 10 Mar 2012 19:01:00 +0100 |
| parents | 8ad751eaba31 |
| children | be13e26ae884 |
| files | ChangeLog lib/exp2.c lib/exp2l.c lib/expl.c lib/expm1.c lib/expm1l.c |
| diffstat | 6 files changed, 24 insertions(+), 15 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,12 @@ +2012-03-10 Bruno Haible <bruno@clisp.org> + + Fix some comments. + * lib/expl.c: Fix an ambiguous comment. + * lib/expm1.c: Likewise. + * lib/expm1l.c: Likewise. + * lib/exp2.c: Likewise. + * lib/exp2l.c: Likewise. + 2012-03-10 Paul Eggert <eggert@cs.ucla.edu> regex: allow inclusion of <regex.h> before <limits.h>
--- a/lib/exp2.c +++ b/lib/exp2.c @@ -83,9 +83,9 @@ + 21844/6081075 * z^13 - 929569/638512875 * z^15 + ... - Since |z| <= log(2)/1024 < 0.0007, the relative error of the z^7 term - is < 0.0007^6 < 2^-60 <= 2^-DBL_MANT_DIG, therefore we can truncate - the series after the z^5 term. */ + Since |z| <= log(2)/1024 < 0.0007, the relative contribution of the + z^7 term is < 0.0007^6 < 2^-60 <= 2^-DBL_MANT_DIG, therefore we can + truncate the series after the z^5 term. */ { double nm = round (x * 256.0); /* = 256 * n + m */
--- a/lib/exp2l.c +++ b/lib/exp2l.c @@ -96,9 +96,9 @@ + 21844/6081075 * z^13 - 929569/638512875 * z^15 + ... - Since |z| <= log(2)/1024 < 0.0007, the relative error of the z^13 term - is < 0.0007^12 < 2^-120 <= 2^-LDBL_MANT_DIG, therefore we can truncate - the series after the z^11 term. */ + Since |z| <= log(2)/1024 < 0.0007, the relative contribution of the + z^13 term is < 0.0007^12 < 2^-120 <= 2^-LDBL_MANT_DIG, therefore we + can truncate the series after the z^11 term. */ { long double nm = roundl (x * 256.0L); /* = 256 * n + m */
--- a/lib/expl.c +++ b/lib/expl.c @@ -99,9 +99,9 @@ + 21844/6081075 * z^13 - 929569/638512875 * z^15 + ... - Since |z| <= log(2)/1024 < 0.0007, the relative error of the z^13 term - is < 0.0007^12 < 2^-120 <= 2^-LDBL_MANT_DIG, therefore we can truncate - the series after the z^11 term. + Since |z| <= log(2)/1024 < 0.0007, the relative contribution of the + z^13 term is < 0.0007^12 < 2^-120 <= 2^-LDBL_MANT_DIG, therefore we + can truncate the series after the z^11 term. Given the usual bounds LDBL_MAX_EXP <= 16384, LDBL_MIN_EXP >= -16381, LDBL_MANT_DIG <= 120, we can estimate x: -11440 <= x <= 11357.
--- a/lib/expm1.c +++ b/lib/expm1.c @@ -99,9 +99,9 @@ + 21844/6081075 * z^13 - 929569/638512875 * z^15 + ... - Since |z| <= log(2)/1024 < 0.0007, the relative error of the z^7 term - is < 0.0007^6 < 2^-60 <= 2^-DBL_MANT_DIG, therefore we can truncate - the series after the z^5 term. + Since |z| <= log(2)/1024 < 0.0007, the relative contribution of the + z^7 term is < 0.0007^6 < 2^-60 <= 2^-DBL_MANT_DIG, therefore we can + truncate the series after the z^5 term. Given the usual bounds DBL_MAX_EXP <= 16384, DBL_MANT_DIG <= 120, we can estimate x: -84 <= x <= 11357.
--- a/lib/expm1l.c +++ b/lib/expm1l.c @@ -109,9 +109,9 @@ + 21844/6081075 * z^13 - 929569/638512875 * z^15 + ... - Since |z| <= log(2)/1024 < 0.0007, the relative error of the z^13 term - is < 0.0007^12 < 2^-120 <= 2^-LDBL_MANT_DIG, therefore we can truncate - the series after the z^11 term. + Since |z| <= log(2)/1024 < 0.0007, the relative contribution of the + z^13 term is < 0.0007^12 < 2^-120 <= 2^-LDBL_MANT_DIG, therefore we + can truncate the series after the z^11 term. Given the usual bounds LDBL_MAX_EXP <= 16384, LDBL_MANT_DIG <= 120, we can estimate x: -84 <= x <= 11357.