From e96879644e4a9f4304725d1da9cc76b0c685b0b8 Mon Sep 17 00:00:00 2001

From: Stefan Liebler <stli@linux.ibm.com>

Date: Wed, 11 Dec 2019 15:09:26 +0100

Subject: [PATCH 16/28] Adjust s_floorf.c and s_floorl.c regarding code style.

This patch just adjusts the generic implementation regarding code style.

No functional change.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

(cherry picked from commit d3a0409ab615e133ff3ea27b492de75a607cff4a)

---

 sysdeps/ieee754/flt-32/s_floorf.c   | 55 +++++++++++-------

 sysdeps/ieee754/ldbl-128/s_floorl.c | 89 ++++++++++++++++++-----------

 2 files changed, 90 insertions(+), 54 deletions(-)

diff --git a/sysdeps/ieee754/flt-32/s_floorf.c b/sysdeps/ieee754/flt-32/s_floorf.c

index 6d37ab90a1..c45816e3bd 100644

--- a/sysdeps/ieee754/flt-32/s_floorf.c

+++ b/sysdeps/ieee754/flt-32/s_floorf.c

@@ -26,34 +26,45 @@

 #include <math-use-builtins.h>

 float

-__floorf(float x)

+__floorf (float x)

 {

 #if USE_FLOORF_BUILTIN

   return __builtin_floorf (x);

 #else

   /* Use generic implementation.  */

-	int32_t i0,j0;

-	uint32_t i;

-	GET_FLOAT_WORD(i0,x);

-	j0 = ((i0>>23)&0xff)-0x7f;

-	if(j0<23) {

-	    if(j0<0) {

-		/* return 0*sign(x) if |x|<1 */

-		if(i0>=0) {i0=0;}

-		else if((i0&0x7fffffff)!=0)

-		  { i0=0xbf800000;}

-	    } else {

-		i = (0x007fffff)>>j0;

-		if((i0&i)==0) return x; /* x is integral */

-		if(i0<0) i0 += (0x00800000)>>j0;

-		i0 &= (~i);

-	    }

-	} else {

-	    if(__builtin_expect(j0==0x80, 0)) return x+x; /* inf or NaN */

-	    else return x;		/* x is integral */

+  int32_t i0, j0;

+  uint32_t i;

+  GET_FLOAT_WORD (i0, x);

+  j0 = ((i0 >> 23) & 0xff) - 0x7f;

+  if (j0 < 23)

+    {

+      if (j0 < 0)

+	{

+	  /* return 0 * sign (x) if |x| < 1  */

+	  if (i0 >= 0)

+	    i0 = 0;

+	  else if ((i0 & 0x7fffffff) != 0)

+	    i0 = 0xbf800000;

 	}

-	SET_FLOAT_WORD(x,i0);

-	return x;

+      else

+	{

+	  i = (0x007fffff) >> j0;

+	  if ((i0 & i) == 0)

+	    return x;		/* x is integral  */

+	  if (i0 < 0)

+	    i0 += (0x00800000) >> j0;

+	  i0 &= (~i);

+	}

+    }

+  else

+    {

+      if (__glibc_unlikely (j0 == 0x80))

+	return x + x;		/* inf or NaN  */

+      else

+	return x;		/* x is integral  */

+    }

+  SET_FLOAT_WORD (x, i0);

+  return x;

 #endif /* ! USE_FLOORF_BUILTIN  */

 }

 #ifndef __floorf

diff --git a/sysdeps/ieee754/ldbl-128/s_floorl.c b/sysdeps/ieee754/ldbl-128/s_floorl.c

index 6143fe6ec5..4fc10992c2 100644

--- a/sysdeps/ieee754/ldbl-128/s_floorl.c

+++ b/sysdeps/ieee754/ldbl-128/s_floorl.c

@@ -29,46 +29,71 @@ static char rcsid[] = "$NetBSD: $";

 #include <libm-alias-ldouble.h>

 #include <math-use-builtins.h>

-_Float128 __floorl(_Float128 x)

+_Float128

+__floorl (_Float128 x)

 {

 #if USE_FLOORL_BUILTIN

   return __builtin_floorl (x);

 #else

   /* Use generic implementation.  */

-	int64_t i0,i1,j0;

-	uint64_t i,j;

-	GET_LDOUBLE_WORDS64(i0,i1,x);

-	j0 = ((i0>>48)&0x7fff)-0x3fff;

-	if(j0<48) {

-	    if(j0<0) {

-		/* return 0*sign(x) if |x|<1 */

-		if(i0>=0) {i0=i1=0;}

-		else if(((i0&0x7fffffffffffffffLL)|i1)!=0)

-		    { i0=0xbfff000000000000ULL;i1=0;}

-	    } else {

-		i = (0x0000ffffffffffffULL)>>j0;

-		if(((i0&i)|i1)==0) return x; /* x is integral */

-		if(i0<0) i0 += (0x0001000000000000LL)>>j0;

-		i0 &= (~i); i1=0;

+  int64_t i0, i1, j0;

+  uint64_t i, j;

+  GET_LDOUBLE_WORDS64 (i0, i1, x);

+  j0 = ((i0 >> 48) & 0x7fff) - 0x3fff;

+  if (j0 < 48)

+    {

+      if (j0 < 0)

+	{

+	  /* return 0 * sign (x) if |x| < 1 */

+	  if (i0 >= 0)

+	    {

+	      i0 = i1 = 0;

 	    }

-	} else if (j0>111) {

-	    if(j0==0x4000) return x+x;	/* inf or NaN */

-	    else return x;		/* x is integral */

-	} else {

-	    i = -1ULL>>(j0-48);

-	    if((i1&i)==0) return x;	/* x is integral */

-	    if(i0<0) {

-		if(j0==48) i0+=1;

-		else {

-		    j = i1+(1LL<<(112-j0));

-		    if(j

-		    i1=j;

-		}

+	  else if (((i0 & 0x7fffffffffffffffLL) | i1) != 0)

+	    {

+	      i0 = 0xbfff000000000000ULL;

+	      i1 = 0;

 	    }

-	    i1 &= (~i);

 	}

-	SET_LDOUBLE_WORDS64(x,i0,i1);

-	return x;

+      else

+	{

+	  i = (0x0000ffffffffffffULL) >> j0;

+	  if (((i0 & i) | i1) == 0)

+	    return x;		/* x is integral  */

+	  if (i0 < 0)

+	    i0 += (0x0001000000000000LL) >> j0;

+	  i0 &= (~i);

+	  i1 = 0;

+	}

+    }

+  else if (j0 > 111)

+    {

+      if (j0 == 0x4000)

+	return x + x;		/* inf or NaN  */

+      else

+	return x;		/* x is integral  */

+    }

+  else

+    {

+      i = -1ULL >> (j0 - 48);

+      if ((i1 & i) == 0)

+	return x;		/* x is integral  */

+      if (i0 < 0)

+	{

+	  if (j0 == 48)

+	    i0 += 1;

+	  else

+	    {

+	      j = i1 + (1LL << (112 - j0));

+	      if (j < i1)

+		i0 += 1 ;	/* got a carry */

+	      i1 = j;

+	    }

+	}

+      i1 &= (~i);

+    }

+  SET_LDOUBLE_WORDS64 (x, i0, i1);

+  return x;

 #endif /* ! USE_FLOORL_BUILTIN  */

 }

 libm_alias_ldouble (__floor, floor)

-- 

2.18.2