mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-26 17:17:20 +08:00
a4705d387f
- This patch uses gdtoa imported from OpenBSD if newlib configure option "--enable-newlib-use-gdtoa=no" is NOT specified. gdtoa provides more accurate output and faster conversion than legacy ldtoa, while it requires more heap memory.
128 lines
2.9 KiB
C
128 lines
2.9 KiB
C
#ifndef _MACHINE_IEEE_H_
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#define _MACHINE_IEEE_H_
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#include <sys/types.h>
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#include <sys/cdefs.h>
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#include <machine/ieeefp.h>
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#include <float.h>
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#if LDBL_MANT_DIG == 24
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#define EXT_IMPLICIT_NBIT
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#define EXT_TO_ARRAY32(p, a) do { \
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(a)[0] = (p)->ext_frac; \
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} while (0)
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#ifdef __IEEE_LITTLE_ENDIAN
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struct ieee_ext {
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uint32_t ext_frac:23;
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uint32_t ext_exp:8;
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uint32_t ext_sign:1;
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};
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#endif
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#ifdef __IEEE_BIG_ENDIAN
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struct ieee_ext {
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#ifndef ___IEEE_BYTES_LITTLE_ENDIAN
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uint32_t ext_sign:1;
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uint32_t ext_exp:8;
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uint32_t ext_frac:23;
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#else /* ARMEL without __VFP_FP__ */
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uint32_t ext_frac:23;
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uint32_t ext_exp:8;
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uint32_t ext_sign:1;
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#endif
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};
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#endif
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#elif LDBL_MANT_DIG == 53
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#define EXT_IMPLICIT_NBIT
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#define EXT_TO_ARRAY32(p, a) do { \
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(a)[0] = (p)->ext_fracl; \
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(a)[1] = (p)->ext_frach; \
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} while (0)
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#ifdef __IEEE_LITTLE_ENDIAN
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struct ieee_ext {
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uint32_t ext_fracl;
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uint32_t ext_frach:20;
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uint32_t ext_exp:11;
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uint32_t ext_sign:1;
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};
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#endif
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#ifdef __IEEE_BIG_ENDIAN
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struct ieee_ext {
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#ifndef ___IEEE_BYTES_LITTLE_ENDIAN
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uint32_t ext_sign:1;
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uint32_t ext_exp:11;
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uint32_t ext_frach:20;
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#else /* ARMEL without __VFP_FP__ */
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uint32_t ext_frach:20;
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uint32_t ext_exp:11;
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uint32_t ext_sign:1;
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#endif
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uint32_t ext_fracl;
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};
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#endif
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#elif LDBL_MANT_DIG == 64
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#define EXT_TO_ARRAY32(p, a) do { \
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(a)[0] = (p)->ext_fracl; \
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(a)[1] = (p)->ext_frach; \
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} while (0)
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#ifdef __IEEE_LITTLE_ENDIAN /* for Intel CPU */
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struct ieee_ext {
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uint32_t ext_fracl;
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uint32_t ext_frach;
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uint32_t ext_exp:15;
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uint32_t ext_sign:1;
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uint32_t ext_padl:16;
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uint32_t ext_padh;
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};
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#endif
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#ifdef __IEEE_BIG_ENDIAN
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struct ieee_ext {
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#ifndef ___IEEE_BYTES_LITTLE_ENDIAN /* for m68k */
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uint32_t ext_sign:1;
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uint32_t ext_exp:15;
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uint32_t ext_pad:16;
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#else /* ARM FPA10 math coprocessor */
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uint32_t ext_exp:15;
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uint32_t ext_pad:16;
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uint32_t ext_sign:1;
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#endif
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uint32_t ext_frach;
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uint32_t ext_fracl;
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};
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#endif
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#elif LDBL_MANT_DIG == 113
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#define EXT_IMPLICIT_NBIT
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#define EXT_TO_ARRAY32(p, a) do { \
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(a)[0] = (p)->ext_fracl; \
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(a)[1] = (p)->ext_fraclm; \
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(a)[2] = (p)->ext_frachm; \
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(a)[3] = (p)->ext_frach; \
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} while (0)
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#ifdef __IEEE_LITTLE_ENDIAN
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struct ieee_ext {
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uint32_t ext_fracl;
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uint32_t ext_fraclm;
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uint32_t ext_frachm;
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uint32_t ext_frach:16;
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uint32_t ext_exp:15;
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uint32_t ext_sign:1;
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};
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#endif
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#ifdef __IEEE_BIG_ENDIAN
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struct ieee_ext {
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#ifndef ___IEEE_BYTES_LITTLE_ENDIAN
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uint32_t ext_sign:1;
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uint32_t ext_exp:15;
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uint32_t ext_frach:16;
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#else /* ARMEL without __VFP_FP__ */
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uint32_t ext_frach:16;
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uint32_t ext_exp:15;
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uint32_t ext_sign:1;
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#endif
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uint32_t ext_frachm;
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uint32_t ext_fraclm;
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uint32_t ext_fracl;
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};
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#endif
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#endif
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#endif /* _MACHINE_IEEE_H_ */
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