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Aarch32/64: Support __FLT_EVAL_METHOD__ values other than 0, 1, 2 

2022-03-30  Andrea Corallo  <andrea.corallo@arm.com>

	* libc/include/machine/ieeefp.h (__FLOAT_TYPE, __DOUBLE_TYPE): New
	macros.
	* libc/include/math.h: Uses __DOUBLE_TYPE __FLOAT_TYPE to define
	double_t float_t if possible.
This commit is contained in:
Andrea Corallo 2022-03-30 15:40:59 +02:00 committed by Jeff Johnston
parent 45cfcfbd71
commit 27f0913c17
2 changed files with 23 additions and 0 deletions
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14
newlib/libc/include/machine/ieeefp.h
View File

@ -90,6 +90,13 @@
#ifndef __SOFTFP__
# define _SUPPORTS_ERREXCEPT
#endif
/* As per ISO/IEC TS 18661 '__FLT_EVAL_METHOD__' will be defined to 16
(if compiling with +fp16 support) so it can't be used by math.h to
define float_t and double_t. For values of '__FLT_EVAL_METHOD__'
other than 0, 1, 2 the definition of float_t and double_t is
implementation-defined. */
#define __DOUBLE_TYPE double
#define __FLOAT_TYPE float
#endif
#if defined (__aarch64__)
@ -102,6 +109,13 @@
#ifdef __ARM_FP
# define _SUPPORTS_ERREXCEPT
#endif
/* As per ISO/IEC TS 18661 '__FLT_EVAL_METHOD__' will be defined to 16
(if compiling with +fp16 support) so it can't be used by math.h to
define float_t and double_t. For values of '__FLT_EVAL_METHOD__'
other than 0, 1, 2 the definition of float_t and double_t is
implementation-defined. */
#define __DOUBLE_TYPE double
#define __FLOAT_TYPE float
#endif
#ifdef __epiphany__

9
newlib/libc/include/math.h
View File

@ -168,6 +168,15 @@ extern int isnan (double);
#else
/* Implementation-defined. Assume float_t and double_t have been
* defined previously for this configuration (e.g. config.h). */
/* If __DOUBLE_TYPE is defined (__FLOAT_TYPE is then supposed to be
defined as well) float_t and double_t definition is suggested by
an arch specific header. */
#ifdef __DOUBLE_TYPE
typedef __DOUBLE_TYPE double_t;
typedef __FLOAT_TYPE float_t;
#endif
/* Assume config.h has provided these types. */
#endif
#else
/* Assume basic definitions. */