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* libc/include/machine/ieeefp.h: Comment about new configuration

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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.
This commit is contained in:
Richard Sandiford
2001-04-04 13:33:01 +00:00
parent 51fc3813e9
commit 16740220a2
41 changed files with 306 additions and 166 deletions
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18
newlib/libc/include/machine/ieeefp.h
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@ -1,6 +1,24 @@
#ifndef __IEEE_BIG_ENDIAN
#ifndef __IEEE_LITTLE_ENDIAN
/* This file can define macros to choose variations of the IEEE float
format:
_FLT_LARGEST_EXPONENT_IS_NORMAL
Defined if the float format uses the largest exponent for finite
numbers rather than NaN and infinity representations. Such a
format cannot represent NaNs or infinities at all, but it's FLT_MAX
is twice the IEEE value.
_FLT_NO_DENORMALS
Defined if the float format does not support IEEE denormals. Every
float with a zero exponent is taken to be a zero representation.
??? At the moment, there are no equivalent macros for doubles and
the macros are not fully supported by --enable-newlib-hw-fp. */
#if defined(__arm__) || defined(__thumb__)
/* ARM always has big-endian words. Within those words the byte ordering
appears to be big or little endian. Newlib doesn't seem to care about