From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2136) id AFBC33858D37; Sun, 4 Sep 2022 06:10:29 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org AFBC33858D37 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1662271829; bh=e5VlzQPD3NXvIyqXRqI+FMmPoJsHPnsf66lEqZ5dzX4=; h=From:To:Subject:Date:From; b=A0zXCeyimWfmdJ1el7PpCf5bFkay7OZMIgJ+ghdNfjdTxeIcfSNBoB7K1iMg7r6Ec rPVNnpS/6sssk02ljpgYd7bKvpwU6iSgXHNcMwsjVDA1wSJ6wEeu8ZcQGEpiJ7G6QN aShmVkomCBzde0xAWMnPcQ2v8m/bs6FeMOwDa1Po= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Aldy Hernandez To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-2393] Add real_isdenormal. X-Act-Checkin: gcc X-Git-Author: Aldy Hernandez X-Git-Refname: refs/heads/master X-Git-Oldrev: 83f2f22850a647bcf1e7cd155fb2ed67f23fc4b3 X-Git-Newrev: 6832dd39d7b5ede0122a27633ef1859ce3d893a6 Message-Id: <20220904061029.AFBC33858D37@sourceware.org> Date: Sun, 4 Sep 2022 06:10:29 +0000 (GMT) List-Id: https://gcc.gnu.org/g:6832dd39d7b5ede0122a27633ef1859ce3d893a6 commit r13-2393-g6832dd39d7b5ede0122a27633ef1859ce3d893a6 Author: Aldy Hernandez Date: Sat Sep 3 10:40:10 2022 +0200 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. Diff: --- gcc/real.cc | 12 ++++++------ gcc/real.h | 7 +++++++ 2 files changed, 13 insertions(+), 6 deletions(-) diff --git a/gcc/real.cc b/gcc/real.cc index 96f05ec68ca..73bbac645d9 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; diff --git a/gcc/real.h b/gcc/real.h index 2f490ef9b72..f9528d765ec 100644 --- a/gcc/real.h +++ b/gcc/real.h @@ -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 *);