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include/fpu/softfloat: add some float16 constants

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This defines the same set of common constants for float 16 as defined
for 32 and 64 bit floats. These are often used by target helper
functions. I've also removed constants that are not used by anybody.

Backports commit efd4829edfa036c5506a16d05c91268faa1f6332 from qemu
This commit is contained in:
Alex Bennée 2018-03-08 10:02:24 -05:00 committed by Lioncash
parent d14a090e65
commit 6eb4594f98
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 5 additions and 3 deletions
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8
qemu/include/fpu/softfloat.h
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@ -273,6 +273,11 @@ static inline float16 float16_set_sign(float16 a, int sign)
return make_float16((float16_val(a) & 0x7fff) | (sign << 15));
}
#define float16_zero make_float16(0)
#define float16_one make_float16(0x3c00)
#define float16_half make_float16(0x3800)
#define float16_infinity make_float16(0x7c00)
/*----------------------------------------------------------------------------
| The pattern for a default generated half-precision NaN.
*----------------------------------------------------------------------------*/
@ -379,8 +384,6 @@ static inline float32 float32_set_sign(float32 a, int sign)
#define float32_zero make_float32(0)
#define float32_one make_float32(0x3f800000)
#define float32_ln2 make_float32(0x3f317218)
#define float32_pi make_float32(0x40490fdb)
#define float32_half make_float32(0x3f000000)
#define float32_infinity make_float32(0x7f800000)
@ -493,7 +496,6 @@ static inline float64 float64_set_sign(float64 a, int sign)
#define float64_zero make_float64(0)
#define float64_one make_float64(0x3ff0000000000000LL)
#define float64_ln2 make_float64(0x3fe62e42fefa39efLL)
#define float64_pi make_float64(0x400921fb54442d18LL)
#define float64_half make_float64(0x3fe0000000000000LL)
#define float64_infinity make_float64(0x7ff0000000000000LL)