get it from flibm and refine it to pass cft
Signed-off-by: rander <[email protected]>
---
backend/src/libocl/tmpl/ocl_math.tmpl.cl | 119 ++++++++++++++++++++++++++++
backend/src/libocl/tmpl/ocl_math.tmpl.h | 4 +
backend/src/libocl/tmpl/ocl_math_20.tmpl.cl | 95 ++++++++++++++++++++++
backend/src/libocl/tmpl/ocl_math_20.tmpl.h | 4 +
4 files changed, 222 insertions(+)
diff --git a/backend/src/libocl/tmpl/ocl_math.tmpl.cl
b/backend/src/libocl/tmpl/ocl_math.tmpl.cl
index 8c5fe8c..a3428c8 100644
--- a/backend/src/libocl/tmpl/ocl_math.tmpl.cl
+++ b/backend/src/libocl/tmpl/ocl_math.tmpl.cl
@@ -3901,6 +3901,31 @@ OVERLOADABLE half rootn(half x, int n) {
//-----------------double -----------------------
+INLINE int __HI(double x){
+ long x64 = as_long(x);
+ int high = convert_int((x64 >> 32) & 0xFFFFFFFF);
+ return high;
+};
+
+INLINE int __LO(double x){
+ long x64 = as_long(x);
+ int low = convert_int(x64 & 0xFFFFFFFFUL);
+ return low;
+};
+
+INLINE void __setHigh(double *x, int val){
+ long x64 = as_long(*x);
+ long high = x64 & 0x00000000FFFFFFFF;
+ high |= ((long)val << 32);
+ *x = as_double(high);
+};
+
+INLINE void __setLow(double *x, int val){
+ long x64 = as_long(*x);
+ long low = x64 & 0xFFFFFFFF00000000;
+ low |= val;
+ *x = as_double(low);
+};
OVERLOADABLE double ceil(double x)
{
@@ -3984,3 +4009,97 @@ OVERLOADABLE double fract(double x, private double *p)
return x -ret;
}
+
+/* @(#)e_log.c 1.3 95/01/18 */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunSoft, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+OVERLOADABLE double log(double x)
+{
+ double ln2_hi = 6.93147180369123816490e-01, /* 3fe62e42 fee00000 */
+ ln2_lo = 1.90821492927058770002e-10, /* 3dea39ef 35793c76 */
+ two54 = 1.80143985094819840000e+16, /* 43500000 00000000 */
+ Lg1 = 6.666666666666735130e-01, /* 3FE55555 55555593 */
+ Lg2 = 3.999999999940941908e-01, /* 3FD99999 9997FA04 */
+ Lg3 = 2.857142874366239149e-01, /* 3FD24924 94229359 */
+ Lg4 = 2.222219843214978396e-01, /* 3FCC71C5 1D8E78AF */
+ Lg5 = 1.818357216161805012e-01, /* 3FC74664 96CB03DE */
+ Lg6 = 1.531383769920937332e-01, /* 3FC39A09 D078C69F */
+ Lg7 = 1.479819860511658591e-01; /* 3FC2F112 DF3E5244 */
+
+ double zero = 0;
+ double hfsq,f,s,z,R,w,t1,t2,dk;
+ int k,hx,i,j;
+ unsigned lx;
+
+ hx = __HI(x); /* high word of x */
+ lx = __LO(x); /* low word of 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 */
+ hx = __HI(x); /* high word of x */
+ }
+ if (hx >= 0x7ff00000) return x+x;
+ k += (hx>>20)-1023;
+ hx &= 0x000fffff;
+ i = (hx+0x95f64)&0x100000;
+ __setHigh(&x, (hx|(i^0x3ff00000))); /* normalize x or x/2 */
+ k += (i>>20);
+ f = x-1.0;
+ if((0x000fffff&(2+hx))<3) { /* |f| < 2**-20 */
+ if(f==zero)
+ {
+ if(k==0) return zero;
+ else
+ {
+ dk=(double)k;
+ return dk*ln2_hi+dk*ln2_lo;
+ }
+ }
+
+ R = f*f*(0.5-0.33333333333333333*f);
+ if(k==0)
+ return f-R;
+ else {dk=(double)k;
+ return dk*ln2_hi-((R-dk*ln2_lo)-f);}
+ }
+ s = f/(2.0+f);
+ dk = (double)k;
+ z = s*s;
+ i = hx-0x6147a;
+ w = z*z;
+ j = 0x6b851-hx;
+ t1= w*(Lg2+w*(Lg4+w*Lg6));
+ t2= z*(Lg1+w*(Lg3+w*(Lg5+w*Lg7)));
+ i |= j;
+ R = t2+t1;
+ if(i>0) {
+ hfsq=0.5*f*f;
+ if(k==0)
+ return f-(hfsq-s*(hfsq+R));
+ else
+ return dk*ln2_hi-((hfsq-(s*(hfsq+R)+dk*ln2_lo))-f);
+ }
+ else
+ {
+ if(k==0)
+ return f-s*(f-R);
+ else
+ return dk*ln2_hi-((s*(f-R)-dk*ln2_lo)-f);
+ }
+
+}
+
diff --git a/backend/src/libocl/tmpl/ocl_math.tmpl.h
b/backend/src/libocl/tmpl/ocl_math.tmpl.h
index dc79c08..ce6b075 100644
--- a/backend/src/libocl/tmpl/ocl_math.tmpl.h
+++ b/backend/src/libocl/tmpl/ocl_math.tmpl.h
@@ -239,4 +239,8 @@ OVERLOADABLE double floor(double x);
OVERLOADABLE double fract(double x, global double *p);
OVERLOADABLE double fract(double x, local double *p);
OVERLOADABLE double fract(double x, private double *p);
+OVERLOADABLE double log(double x);
+OVERLOADABLE double log2(double x);
+OVERLOADABLE double log10(double x);
+
diff --git a/backend/src/libocl/tmpl/ocl_math_20.tmpl.cl
b/backend/src/libocl/tmpl/ocl_math_20.tmpl.cl
index 701d006..0f355b1 100644
--- a/backend/src/libocl/tmpl/ocl_math_20.tmpl.cl
+++ b/backend/src/libocl/tmpl/ocl_math_20.tmpl.cl
@@ -3886,3 +3886,98 @@ OVERLOADABLE double fract(double x, private double *p)
}
+/* @(#)e_log.c 1.3 95/01/18 */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunSoft, a Sun Microsystems, Inc. business
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+OVERLOADABLE double log(double x)
+{
+ double ln2_hi = 6.93147180369123816490e-01, /* 3fe62e42 fee00000 */
+ ln2_lo = 1.90821492927058770002e-10, /* 3dea39ef 35793c76 */
+ two54 = 1.80143985094819840000e+16, /* 43500000 00000000 */
+ Lg1 = 6.666666666666735130e-01, /* 3FE55555 55555593 */
+ Lg2 = 3.999999999940941908e-01, /* 3FD99999 9997FA04 */
+ Lg3 = 2.857142874366239149e-01, /* 3FD24924 94229359 */
+ Lg4 = 2.222219843214978396e-01, /* 3FCC71C5 1D8E78AF */
+ Lg5 = 1.818357216161805012e-01, /* 3FC74664 96CB03DE */
+ Lg6 = 1.531383769920937332e-01, /* 3FC39A09 D078C69F */
+ Lg7 = 1.479819860511658591e-01; /* 3FC2F112 DF3E5244 */
+
+ double zero = 0;
+ double hfsq,f,s,z,R,w,t1,t2,dk;
+ int k,hx,i,j;
+ unsigned lx;
+
+ hx = __HI(x); /* high word of x */
+ lx = __LO(x); /* low word of 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 */
+ hx = __HI(x); /* high word of x */
+ }
+ if (hx >= 0x7ff00000) return x+x;
+ k += (hx>>20)-1023;
+ hx &= 0x000fffff;
+ i = (hx+0x95f64)&0x100000;
+ __setHigh(&x, (hx|(i^0x3ff00000))); /* normalize x or x/2 */
+ k += (i>>20);
+ f = x-1.0;
+ if((0x000fffff&(2+hx))<3) { /* |f| < 2**-20 */
+ if(f==zero)
+ {
+ if(k==0) return zero;
+ else
+ {
+ dk=(double)k;
+ return dk*ln2_hi+dk*ln2_lo;
+ }
+ }
+
+ R = f*f*(0.5-0.33333333333333333*f);
+ if(k==0)
+ return f-R;
+ else {dk=(double)k;
+ return dk*ln2_hi-((R-dk*ln2_lo)-f);}
+ }
+ s = f/(2.0+f);
+ dk = (double)k;
+ z = s*s;
+ i = hx-0x6147a;
+ w = z*z;
+ j = 0x6b851-hx;
+ t1= w*(Lg2+w*(Lg4+w*Lg6));
+ t2= z*(Lg1+w*(Lg3+w*(Lg5+w*Lg7)));
+ i |= j;
+ R = t2+t1;
+ if(i>0) {
+ hfsq=0.5*f*f;
+ if(k==0)
+ return f-(hfsq-s*(hfsq+R));
+ else
+ return dk*ln2_hi-((hfsq-(s*(hfsq+R)+dk*ln2_lo))-f);
+ }
+ else
+ {
+ if(k==0)
+ return f-s*(f-R);
+ else
+ return dk*ln2_hi-((s*(f-R)-dk*ln2_lo)-f);
+ }
+
+}
+
+
+
diff --git a/backend/src/libocl/tmpl/ocl_math_20.tmpl.h
b/backend/src/libocl/tmpl/ocl_math_20.tmpl.h
index 52a6b23..f65d3e0 100644
--- a/backend/src/libocl/tmpl/ocl_math_20.tmpl.h
+++ b/backend/src/libocl/tmpl/ocl_math_20.tmpl.h
@@ -216,4 +216,8 @@ OVERLOADABLE double floor(double x);
OVERLOADABLE double fract(double x, global double *p);
OVERLOADABLE double fract(double x, local double *p);
OVERLOADABLE double fract(double x, private double *p);
+OVERLOADABLE double log(double x);
+OVERLOADABLE double log2(double x);
+OVERLOADABLE double log10(double x);
+
--
2.7.4
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