9 messages in org.freebsd.freebsd-ppcRe: ppc float.h| From | Sent On | Attachments |
|---|---|---|
| Andreas Tobler | Nov 12, 2008 11:49 am | |
| Peter Grehan | Nov 12, 2008 4:59 pm | |
| Marcel Moolenaar | Nov 12, 2008 7:23 pm | |
| Andreas Tobler | Nov 13, 2008 11:12 am | |
| Andreas Tobler | Nov 13, 2008 11:13 am | |
| Andreas Tobler | Nov 14, 2008 1:02 pm | |
| Peter Grehan | Nov 14, 2008 2:42 pm | |
| Andreas Tobler | Nov 16, 2008 11:01 am | |
| Marcel Moolenaar | Nov 16, 2008 11:20 am |
| Subject: | Re: ppc float.h | |
|---|---|---|
| From: | Marcel Moolenaar (xcl...@mac.com) | |
| Date: | Nov 12, 2008 7:23:47 pm | |
| List: | org.freebsd.freebsd-ppc | |
On Nov 12, 2008, at 11:50 AM, Andreas Tobler wrote:
Hello,
can somebody explain why we have these defines in sys/powerpc/ include/float.h ?
#define LDBL_MANT_DIG DBL_MANT_DIG #define LDBL_EPSILON DBL_EPSILON #define LDBL_DIG DBL_DIG #define LDBL_MIN_EXP DBL_MIN_EXP #define LDBL_MIN DBL_MIN #define LDBL_MIN_10_EXP DBL_MIN_10_EXP #define LDBL_MAX_EXP DBL_MAX_EXP #define LDBL_MAX DBL_MAX #define LDBL_MAX_10_EXP DBL_MAX_10_EXP
Because "long double" on PowerPC is the same as "double". This is dictated by the compiler:
mini-g4% gcc -E -dM -xc /dev/null | grep DBL | grep DIG #define __DBL_DIG__ 15 #define __LDBL_DIG__ 15 #define __LDBL_MANT_DIG__ 53 #define __DBL_MANT_DIG__ 53
-- Marcel Moolenaar xcl...@mac.com
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