From 3e89323b7976e230cc01744c046b825d049c7fa6 Mon Sep 17 00:00:00 2001 From: Bruno Haible Date: Sat, 15 Oct 2011 12:13:07 +0200 Subject: [PATCH] vasnprintf: Fix comments. * lib/vasnprintf.c (decode_long_double, decode_double): Fix comments. --- ChangeLog | 5 +++++ lib/vasnprintf.c | 8 ++++---- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/ChangeLog b/ChangeLog index d5fbbab4e5..43024b3415 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2011-10-15 Bruno Haible + + vasnprintf: Fix comments. + * lib/vasnprintf.c (decode_long_double, decode_double): Fix comments. + 2011-10-14 Bruno Haible Tests for module 'integer_length_ll'. diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c index d1eeaa5e0b..9c22475222 100644 --- a/lib/vasnprintf.c +++ b/lib/vasnprintf.c @@ -885,9 +885,9 @@ decode_long_double (long double x, int *ep, mpn_t *mp) y = frexpl (x, &exp); if (!(y >= 0.0L && y < 1.0L)) abort (); - /* x = 2^exp * y = 2^(exp - LDBL_MANT_BIT) * (y * LDBL_MANT_BIT), and the + /* x = 2^exp * y = 2^(exp - LDBL_MANT_BIT) * (y * 2^LDBL_MANT_BIT), and the latter is an integer. */ - /* Convert the mantissa (y * LDBL_MANT_BIT) to a sequence of limbs. + /* Convert the mantissa (y * 2^LDBL_MANT_BIT) to a sequence of limbs. I'm not sure whether it's safe to cast a 'long double' value between 2^31 and 2^32 to 'unsigned int', therefore play safe and cast only 'long double' values between 0 and 2^16 (to 'unsigned int' or 'int', @@ -973,9 +973,9 @@ decode_double (double x, int *ep, mpn_t *mp) y = frexp (x, &exp); if (!(y >= 0.0 && y < 1.0)) abort (); - /* x = 2^exp * y = 2^(exp - DBL_MANT_BIT) * (y * DBL_MANT_BIT), and the + /* x = 2^exp * y = 2^(exp - DBL_MANT_BIT) * (y * 2^DBL_MANT_BIT), and the latter is an integer. */ - /* Convert the mantissa (y * DBL_MANT_BIT) to a sequence of limbs. + /* Convert the mantissa (y * 2^DBL_MANT_BIT) to a sequence of limbs. I'm not sure whether it's safe to cast a 'double' value between 2^31 and 2^32 to 'unsigned int', therefore play safe and cast only 'double' values between 0 and 2^16 (to 'unsigned int' or 'int', -- 2.39.5