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21c9fd9688
My earlier libquadmath change apparently broke mingw32 build, while on Linux <bits/endian.h> is included and defines these, on Mingw apparently that isn't the case, while soft-fp wants a guarantee that sfp-machine.h defines these. 2024-04-09 Jakub Jelinek <jakub@redhat.com> * sfp-machine.h (__LITTLE_ENDIAN, __BIG_ENDIAN, __BYTE_ORDER): Define if __BYTE_ORDER isn't defined.
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/* libquadmath uses soft-fp only for sqrtq and only for
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the positive finite case, so it doesn't care about
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NaN representation, nor tininess after rounding vs.
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before rounding, all it cares about is current rounding
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mode and raising inexact exceptions. */
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#if __SIZEOF_LONG__ == 8
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#define _FP_W_TYPE_SIZE 64
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#define _FP_I_TYPE long long
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#define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0
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#else
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#define _FP_W_TYPE_SIZE 32
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#define _FP_I_TYPE int
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#define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0, 0, 0
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#endif
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#define _FP_W_TYPE unsigned _FP_I_TYPE
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#define _FP_WS_TYPE signed _FP_I_TYPE
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#define _FP_QNANNEGATEDP 0
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#define _FP_NANSIGN_Q 1
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#define _FP_KEEPNANFRACP 1
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#define _FP_TININESS_AFTER_ROUNDING 0
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#ifndef __BYTE_ORDER
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#define __LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
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#define __BIG_ENDIAN __ORDER_BIG_ENDIAN__
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#define __BYTE_ORDER __BYTE_ORDER__
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#endif
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#define _FP_DECL_EX \
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unsigned int fp_roundmode __attribute__ ((unused)) = FP_RND_NEAREST;
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#define FP_ROUNDMODE fp_roundmode
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#define FP_INIT_ROUNDMODE \
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do \
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{ \
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switch (fegetround ()) \
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{ \
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case FE_UPWARD: \
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fp_roundmode = FP_RND_PINF; \
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break; \
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case FE_DOWNWARD: \
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fp_roundmode = FP_RND_MINF; \
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break; \
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case FE_TOWARDZERO: \
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fp_roundmode = FP_RND_ZERO; \
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break; \
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default: \
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break; \
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} \
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} \
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while (0)
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#define FP_HANDLE_EXCEPTIONS \
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do \
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{ \
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if (_fex & FP_EX_INEXACT) \
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{ \
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volatile double eight = 8.0; \
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volatile double eps \
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= DBL_EPSILON; \
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eight += eps; \
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} \
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} \
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while (0)
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