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softfloat: Use pointers with unpack_raw 

At the same time, rename to unpack_raw64.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-10-23 14:17:19 -07:00
parent 0fc07cade2
commit d8fdd17280
1 changed files with 19 additions and 10 deletions
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29
fpu/softfloat.c
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@ -580,36 +580,45 @@ static const FloatFmt float64_params = {
}; };
/* Unpack a float to parts, but do not canonicalize. */ /* Unpack a float to parts, but do not canonicalize. */
static inline FloatParts64 unpack_raw(FloatFmt fmt, uint64_t raw) static void unpack_raw64(FloatParts64 *r, const FloatFmt *fmt, uint64_t raw)
{ {
const int sign_pos = fmt.frac_size + fmt.exp_size; const int f_size = fmt->frac_size;
const int e_size = fmt->exp_size;
return (FloatParts64) { *r = (FloatParts64) {
.cls = float_class_unclassified, .cls = float_class_unclassified,
.sign = extract64(raw, sign_pos, 1), .sign = extract64(raw, f_size + e_size, 1),
.exp = extract64(raw, fmt.frac_size, fmt.exp_size), .exp = extract64(raw, f_size, e_size),
.frac = extract64(raw, 0, fmt.frac_size), .frac = extract64(raw, 0, f_size)
}; };
} }
static inline FloatParts64 float16_unpack_raw(float16 f) static inline FloatParts64 float16_unpack_raw(float16 f)
{ {
return unpack_raw(float16_params, f); FloatParts64 p;
unpack_raw64(&p, &float16_params, f);
return p;
} }
static inline FloatParts64 bfloat16_unpack_raw(bfloat16 f) static inline FloatParts64 bfloat16_unpack_raw(bfloat16 f)
{ {
return unpack_raw(bfloat16_params, f); FloatParts64 p;
unpack_raw64(&p, &bfloat16_params, f);
return p;
} }
static inline FloatParts64 float32_unpack_raw(float32 f) static inline FloatParts64 float32_unpack_raw(float32 f)
{ {
return unpack_raw(float32_params, f); FloatParts64 p;
unpack_raw64(&p, &float32_params, f);
return p;
} }
static inline FloatParts64 float64_unpack_raw(float64 f) static inline FloatParts64 float64_unpack_raw(float64 f)
{ {
return unpack_raw(float64_params, f); FloatParts64 p;
unpack_raw64(&p, &float64_params, f);
return p;
} }
/* Pack a float from parts, but do not canonicalize. */ /* Pack a float from parts, but do not canonicalize. */