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| author | Richard Sandiford <rdsandiford@googlemail.com> | 2001-04-04 13:33:01 +0000 |
|---|---|---|
| committer | Richard Sandiford <rdsandiford@googlemail.com> | 2001-04-04 13:33:01 +0000 |
| commit | 16740220a22d09a1c63714d93f1efc5fbe3927f3 (patch) | |
| tree | 7b24242b9b20a0ee328c94acd2c95e1a8778c944 /newlib/libm/common/sf_ilogb.c | |
| parent | 51fc3813e9a9ef8079b2fbde1b12647dd3f4ac93 (diff) | |
| download | newlib-16740220a22d09a1c63714d93f1efc5fbe3927f3.zip newlib-16740220a22d09a1c63714d93f1efc5fbe3927f3.tar.gz newlib-16740220a22d09a1c63714d93f1efc5fbe3927f3.tar.bz2 | |
* libc/include/machine/ieeefp.h: Comment about new configuration
macros _FLT_LARGEST_EXPONENT_IS_NORMAL and _FLT_NO_DENORMALS.
* libm/common/fdlib.h: Define new macros for testing floats.
* libm/common/sf_*: Use them.
* libm/math/ef_*: Likewise.
* libm/math/sf_*: Likewise.
Diffstat (limited to 'newlib/libm/common/sf_ilogb.c')
| -rw-r--r-- | newlib/libm/common/sf_ilogb.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/newlib/libm/common/sf_ilogb.c b/newlib/libm/common/sf_ilogb.c index ee65594..ec59406 100644 --- a/newlib/libm/common/sf_ilogb.c +++ b/newlib/libm/common/sf_ilogb.c @@ -27,15 +27,14 @@ GET_FLOAT_WORD(hx,x); hx &= 0x7fffffff; - if(hx<0x00800000) { - if(hx==0) - return - INT_MAX; /* ilogb(0) = 0x80000001 */ - else /* subnormal x */ - for (ix = -126,hx<<=8; hx>0; hx<<=1) ix -=1; + if(FLT_UWORD_IS_ZERO(hx)) + return - INT_MAX; /* ilogb(0) = 0x80000001 */ + if(FLT_UWORD_IS_SUBNORMAL(hx)) { + for (ix = -126,hx<<=8; hx>0; hx<<=1) ix -=1; return ix; } - else if (hx<0x7f800000) return (hx>>23)-127; - else return INT_MAX; + else if (!FLT_UWORD_IS_FINITE(hx)) return INT_MAX; + else return (hx>>23)-127; } #ifdef _DOUBLE_IS_32BITS |