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| author | Aldy Hernandez <aldyh@redhat.com> | 2022-09-03 10:40:10 +0200 |
|---|---|---|
| committer | Aldy Hernandez <aldyh@redhat.com> | 2022-09-04 08:09:42 +0200 |
| commit | 6832dd39d7b5ede0122a27633ef1859ce3d893a6 (patch) | |
| tree | e3d91e6b4a6c4a6f224a45ee9e0d682c82fae5ef | |
| parent | 83f2f22850a647bcf1e7cd155fb2ed67f23fc4b3 (diff) | |
| download | gcc-6832dd39d7b5ede0122a27633ef1859ce3d893a6.zip gcc-6832dd39d7b5ede0122a27633ef1859ce3d893a6.tar.gz gcc-6832dd39d7b5ede0122a27633ef1859ce3d893a6.tar.bz2 | |
Add real_isdenormal.
There are 6 idioms of the same check and I'd like to add more.
It seems there are macros as well as functions for things like
REAL_VALUE_ISINF and REAL_VALUE_NEGATIVE. I don't know if there was
historical need for this duplicity, but I think it's cleaner if we
start gravitating towards inline functions only.
gcc/ChangeLog:
* real.cc (encode_ieee_single): Use real_isdenormal.
(encode_ieee_double): Same.
(encode_ieee_extended): Same.
(encode_ieee_quad): Same.
(encode_ieee_half): Same.
(encode_arm_bfloat_half): Same.
* real.h (real_isdenormal): New.
| -rw-r--r-- | gcc/real.cc | 12 | ||||
| -rw-r--r-- | gcc/real.h | 7 |
2 files changed, 13 insertions, 6 deletions
diff --git a/gcc/real.cc b/gcc/real.cc index 96f05ec..73bbac6 100644 --- a/gcc/real.cc +++ b/gcc/real.cc @@ -2954,7 +2954,7 @@ encode_ieee_single (const struct real_format *fmt, long *buf, { unsigned long image, sig, exp; unsigned long sign = r->sign; - bool denormal = (r->sig[SIGSZ-1] & SIG_MSB) == 0; + bool denormal = real_isdenormal (r); image = sign << 31; sig = (r->sig[SIGSZ-1] >> (HOST_BITS_PER_LONG - 24)) & 0x7fffff; @@ -3175,7 +3175,7 @@ encode_ieee_double (const struct real_format *fmt, long *buf, { unsigned long image_lo, image_hi, sig_lo, sig_hi, exp; unsigned long sign = r->sign; - bool denormal = (r->sig[SIGSZ-1] & SIG_MSB) == 0; + bool denormal = real_isdenormal (r); image_hi = sign << 31; image_lo = 0; @@ -3433,7 +3433,7 @@ encode_ieee_extended (const struct real_format *fmt, long *buf, const REAL_VALUE_TYPE *r) { unsigned long image_hi, sig_hi, sig_lo; - bool denormal = (r->sig[SIGSZ-1] & SIG_MSB) == 0; + bool denormal = real_isdenormal (r); image_hi = r->sign << 15; sig_hi = sig_lo = 0; @@ -3964,7 +3964,7 @@ encode_ieee_quad (const struct real_format *fmt, long *buf, { unsigned long image3, image2, image1, image0, exp; unsigned long sign = r->sign; - bool denormal = (r->sig[SIGSZ-1] & SIG_MSB) == 0; + bool denormal = real_isdenormal (r); REAL_VALUE_TYPE u; image3 = sign << 31; @@ -4721,7 +4721,7 @@ encode_ieee_half (const struct real_format *fmt, long *buf, { unsigned long image, sig, exp; unsigned long sign = r->sign; - bool denormal = (r->sig[SIGSZ-1] & SIG_MSB) == 0; + bool denormal = real_isdenormal (r); image = sign << 15; sig = (r->sig[SIGSZ-1] >> (HOST_BITS_PER_LONG - 11)) & 0x3ff; @@ -4835,7 +4835,7 @@ encode_arm_bfloat_half (const struct real_format *fmt, long *buf, { unsigned long image, sig, exp; unsigned long sign = r->sign; - bool denormal = (r->sig[SIGSZ-1] & SIG_MSB) == 0; + bool denormal = real_isdenormal (r); image = sign << 15; sig = (r->sig[SIGSZ-1] >> (HOST_BITS_PER_LONG - 8)) & 0x7f; @@ -286,6 +286,13 @@ extern bool real_isnan (const REAL_VALUE_TYPE *); /* Determine whether a floating-point value X is a signaling NaN. */ extern bool real_issignaling_nan (const REAL_VALUE_TYPE *); +/* Determine whether a floating-point value X is a denormal. */ +inline bool +real_isdenormal (const REAL_VALUE_TYPE *r) +{ + return (r->sig[SIGSZ-1] & SIG_MSB) == 0; +} + /* Determine whether a floating-point value X is finite. */ extern bool real_isfinite (const REAL_VALUE_TYPE *); |