svn commit: r226375 - head/lib/msun/src

[David Schultz]

Author: das
Date: Sat Oct 15 05:00:56 2011
New Revision: 226375
URL: http://svn.freebsd.org/changeset/base/226375

Log:
  Style fixes and updates to comments.
  
  Submitted by:	bde

Modified:
  head/lib/msun/src/e_log10.c
  head/lib/msun/src/e_log10f.c
  head/lib/msun/src/e_log2.c
  head/lib/msun/src/e_log2f.c

Modified: head/lib/msun/src/e_log10.c
==============================================================================
--- head/lib/msun/src/e_log10.c	Sat Oct 15 04:24:54 2011	(r226374)
+++ head/lib/msun/src/e_log10.c	Sat Oct 15 05:00:56 2011	(r226375)
@@ -15,7 +15,8 @@
 __FBSDID("$FreeBSD$");
 
 /*
- * Return the base 10 logarithm of x. See k_log.c for details on the algorithm.
+ * Return the base 10 logarithm of x.  See e_log.c and k_log.h for most
+ * comments.
  */
 
 #include "math.h"
@@ -40,14 +41,14 @@ __ieee754_log10(double x)
 
 	EXTRACT_WORDS(hx,lx,x);
 
-        k=0;
-        if (hx < 0x00100000) {                  /* x < 2**-1022  */
-            if (((hx&0x7fffffff)|lx)==0)
-                return -two54/zero;             /* log(+-0)=-inf */
-            if (hx<0) return (x-x)/zero;        /* log(-#) = NaN */
-            k -= 54; x *= two54; /* subnormal number, scale up x */
+	k=0;
+	if (hx < 0x00100000) {			/* x < 2**-1022  */
+	    if (((hx&0x7fffffff)|lx)==0)
+		return -two54/zero;		/* log(+-0)=-inf */
+	    if (hx<0) return (x-x)/zero;	/* log(-#) = NaN */
+	    k -= 54; x *= two54; /* subnormal number, scale up x */
 	    GET_HIGH_WORD(hx,x);
-        }
+	}
 	if (hx >= 0x7ff00000) return x+x;
 	k += (hx>>20)-1023;
 	hx &= 0x000fffff;

Modified: head/lib/msun/src/e_log10f.c
==============================================================================
--- head/lib/msun/src/e_log10f.c	Sat Oct 15 04:24:54 2011	(r226374)
+++ head/lib/msun/src/e_log10f.c	Sat Oct 15 05:00:56 2011	(r226375)
@@ -13,7 +13,7 @@
 __FBSDID("$FreeBSD$");
 
 /*
- * Return the base 10 logarithm of x. See k_log.c for details on the algorithm.
+ * Float version of e_log10.c.  See the latter for most comments.
  */
 
 #include "math.h"
@@ -37,14 +37,14 @@ __ieee754_log10f(float x)
 
 	GET_FLOAT_WORD(hx,x);
 
-        k=0;
-        if (hx < 0x00800000) {                  /* x < 2**-126  */
-            if ((hx&0x7fffffff)==0)
-                return -two25/zero;             /* log(+-0)=-inf */
-            if (hx<0) return (x-x)/zero;        /* log(-#) = NaN */
-            k -= 25; x *= two25; /* subnormal number, scale up x */
+	k=0;
+	if (hx < 0x00800000) {			/* x < 2**-126  */
+	    if ((hx&0x7fffffff)==0)
+		return -two25/zero;		/* log(+-0)=-inf */
+	    if (hx<0) return (x-x)/zero;	/* log(-#) = NaN */
+	    k -= 25; x *= two25; /* subnormal number, scale up x */
 	    GET_FLOAT_WORD(hx,x);
-        }
+	}
 	if (hx >= 0x7f800000) return x+x;
 	k += (hx>>23)-127;
 	hx &= 0x007fffff;

Modified: head/lib/msun/src/e_log2.c
==============================================================================
--- head/lib/msun/src/e_log2.c	Sat Oct 15 04:24:54 2011	(r226374)
+++ head/lib/msun/src/e_log2.c	Sat Oct 15 05:00:56 2011	(r226375)
@@ -15,7 +15,8 @@
 __FBSDID("$FreeBSD$");
 
 /*
- * Return the base 2 logarithm of x. See k_log.c for details on the algorithm.
+ * Return the base 2 logarithm of x.  See e_log.c and k_log.h for most
+ * comments.
  */
 
 #include "math.h"
@@ -38,14 +39,14 @@ __ieee754_log2(double x)
 
 	EXTRACT_WORDS(hx,lx,x);
 
-        k=0;
-        if (hx < 0x00100000) {                  /* x < 2**-1022  */
-            if (((hx&0x7fffffff)|lx)==0)
-                return -two54/zero;             /* log(+-0)=-inf */
-            if (hx<0) return (x-x)/zero;        /* log(-#) = NaN */
-            k -= 54; x *= two54; /* subnormal number, scale up x */
+	k=0;
+	if (hx < 0x00100000) {			/* x < 2**-1022  */
+	    if (((hx&0x7fffffff)|lx)==0)
+		return -two54/zero;		/* log(+-0)=-inf */
+	    if (hx<0) return (x-x)/zero;	/* log(-#) = NaN */
+	    k -= 54; x *= two54; /* subnormal number, scale up x */
 	    GET_HIGH_WORD(hx,x);
-        }
+	}
 	if (hx >= 0x7ff00000) return x+x;
 	k += (hx>>20)-1023;
 	hx &= 0x000fffff;

Modified: head/lib/msun/src/e_log2f.c
==============================================================================
--- head/lib/msun/src/e_log2f.c	Sat Oct 15 04:24:54 2011	(r226374)
+++ head/lib/msun/src/e_log2f.c	Sat Oct 15 05:00:56 2011	(r226375)
@@ -13,7 +13,7 @@
 __FBSDID("$FreeBSD$");
 
 /*
- * Return the base 2 logarithm of x. See k_log.c for details on the algorithm.
+ * Float version of e_log2.c.  See the latter for most comments.
  */
 
 #include "math.h"
@@ -35,14 +35,14 @@ __ieee754_log2f(float x)
 
 	GET_FLOAT_WORD(hx,x);
 
-        k=0;
-        if (hx < 0x00800000) {                  /* x < 2**-126  */
-            if ((hx&0x7fffffff)==0)
-                return -two25/zero;             /* log(+-0)=-inf */
-            if (hx<0) return (x-x)/zero;        /* log(-#) = NaN */
-            k -= 25; x *= two25; /* subnormal number, scale up x */
+	k=0;
+	if (hx < 0x00800000) {			/* x < 2**-126  */
+	    if ((hx&0x7fffffff)==0)
+		return -two25/zero;		/* log(+-0)=-inf */
+	    if (hx<0) return (x-x)/zero;	/* log(-#) = NaN */
+	    k -= 25; x *= two25; /* subnormal number, scale up x */
 	    GET_FLOAT_WORD(hx,x);
-        }
+	}
 	if (hx >= 0x7f800000) return x+x;
 	k += (hx>>23)-127;
 	hx &= 0x007fffff;