diff options
Diffstat (limited to 'modules/fdlibm/patches/18_use_stdlib_sqrt.patch')
| -rw-r--r-- | modules/fdlibm/patches/18_use_stdlib_sqrt.patch | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/modules/fdlibm/patches/18_use_stdlib_sqrt.patch b/modules/fdlibm/patches/18_use_stdlib_sqrt.patch new file mode 100644 index 000000000..1f87dd73b --- /dev/null +++ b/modules/fdlibm/patches/18_use_stdlib_sqrt.patch @@ -0,0 +1,255 @@ +diff --git a/modules/fdlibm/src/e_acos.cpp b/modules/fdlibm/src/e_acos.cpp +--- a/modules/fdlibm/src/e_acos.cpp ++++ b/modules/fdlibm/src/e_acos.cpp +@@ -33,16 +33,17 @@ + * + * Special cases: + * if x is NaN, return x itself; + * if |x|>1, return NaN with invalid signal. + * + * Function needed: sqrt + */ + ++#include <cmath> + #include <float.h> + + #include "math_private.h" + + static const double + one= 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */ + pi = 3.14159265358979311600e+00, /* 0x400921FB, 0x54442D18 */ + pio2_hi = 1.57079632679489655800e+00; /* 0x3FF921FB, 0x54442D18 */ +@@ -82,23 +83,23 @@ double + p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5))))); + q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4))); + r = p/q; + return pio2_hi - (x - (pio2_lo-x*r)); + } else if (hx<0) { /* x < -0.5 */ + z = (one+x)*0.5; + p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5))))); + q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4))); +- s = sqrt(z); ++ s = std::sqrt(z); + r = p/q; + w = r*s-pio2_lo; + return pi - 2.0*(s+w); + } else { /* x > 0.5 */ + z = (one-x)*0.5; +- s = sqrt(z); ++ s = std::sqrt(z); + df = s; + SET_LOW_WORD(df,0); + c = (z-df*df)/(s+df); + p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5))))); + q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4))); + r = p/q; + w = r*s+c; + return 2.0*(df+w); +diff --git a/modules/fdlibm/src/e_acosh.cpp b/modules/fdlibm/src/e_acosh.cpp +--- a/modules/fdlibm/src/e_acosh.cpp ++++ b/modules/fdlibm/src/e_acosh.cpp +@@ -24,16 +24,17 @@ + * acosh(x) := log(2x-1/(sqrt(x*x-1)+x)) if x>2; else + * acosh(x) := log1p(t+sqrt(2.0*t+t*t)); where t=x-1. + * + * Special cases: + * acosh(x) is NaN with signal if x<1. + * acosh(NaN) is NaN without signal. + */ + ++#include <cmath> + #include <float.h> + + #include "math_private.h" + + static const double + one = 1.0, + ln2 = 6.93147180559945286227e-01; /* 0x3FE62E42, 0xFEFA39EF */ + +@@ -50,14 +51,14 @@ double + if(hx >=0x7ff00000) { /* x is inf of NaN */ + return x+x; + } else + return __ieee754_log(x)+ln2; /* acosh(huge)=log(2x) */ + } else if(((hx-0x3ff00000)|lx)==0) { + return 0.0; /* acosh(1) = 0 */ + } else if (hx > 0x40000000) { /* 2**28 > x > 2 */ + t=x*x; +- return __ieee754_log(2.0*x-one/(x+sqrt(t-one))); ++ return __ieee754_log(2.0*x-one/(x+std::sqrt(t-one))); + } else { /* 1<x<2 */ + t = x-one; +- return log1p(t+sqrt(2.0*t+t*t)); ++ return log1p(t+std::sqrt(2.0*t+t*t)); + } + } +diff --git a/modules/fdlibm/src/e_asin.cpp b/modules/fdlibm/src/e_asin.cpp +--- a/modules/fdlibm/src/e_asin.cpp ++++ b/modules/fdlibm/src/e_asin.cpp +@@ -39,16 +39,17 @@ + * = pio4_hi+(pio4-2f)-(2s*z*R(z)-(pio2_lo+2c)) + * + * Special cases: + * if x is NaN, return x itself; + * if |x|>1, return NaN with invalid signal. + * + */ + ++#include <cmath> + #include <float.h> + + #include "math_private.h" + + static const double + one = 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */ + huge = 1.000e+300, + pio2_hi = 1.57079632679489655800e+00, /* 0x3FF921FB, 0x54442D18 */ +@@ -90,17 +91,17 @@ double + w = p/q; + return x+x*w; + } + /* 1> |x|>= 0.5 */ + w = one-fabs(x); + t = w*0.5; + p = t*(pS0+t*(pS1+t*(pS2+t*(pS3+t*(pS4+t*pS5))))); + q = one+t*(qS1+t*(qS2+t*(qS3+t*qS4))); +- s = sqrt(t); ++ s = std::sqrt(t); + if(ix>=0x3FEF3333) { /* if |x| > 0.975 */ + w = p/q; + t = pio2_hi-(2.0*(s+s*w)-pio2_lo); + } else { + w = s; + SET_LOW_WORD(w,0); + c = (t-w*w)/(s+w); + r = p/q; +diff --git a/modules/fdlibm/src/e_hypot.cpp b/modules/fdlibm/src/e_hypot.cpp +--- a/modules/fdlibm/src/e_hypot.cpp ++++ b/modules/fdlibm/src/e_hypot.cpp +@@ -41,16 +41,17 @@ + * hypot(x,y) is INF if x or y is +INF or -INF; else + * hypot(x,y) is NAN if x or y is NAN. + * + * Accuracy: + * hypot(x,y) returns sqrt(x^2+y^2) with error less + * than 1 ulps (units in the last place) + */ + ++#include <cmath> + #include <float.h> + + #include "math_private.h" + + double + __ieee754_hypot(double x, double y) + { + double a,b,t1,t2,y1,y2,w; +@@ -100,26 +101,26 @@ double + } + } + /* medium size a and b */ + w = a-b; + if (w>b) { + t1 = 0; + SET_HIGH_WORD(t1,ha); + t2 = a-t1; +- w = sqrt(t1*t1-(b*(-b)-t2*(a+t1))); ++ w = std::sqrt(t1*t1-(b*(-b)-t2*(a+t1))); + } else { + a = a+a; + y1 = 0; + SET_HIGH_WORD(y1,hb); + y2 = b - y1; + t1 = 0; + SET_HIGH_WORD(t1,ha+0x00100000); + t2 = a - t1; +- w = sqrt(t1*y1-(w*(-w)-(t1*y2+t2*b))); ++ w = std::sqrt(t1*y1-(w*(-w)-(t1*y2+t2*b))); + } + if(k!=0) { + u_int32_t high; + t1 = 1.0; + GET_HIGH_WORD(high,t1); + SET_HIGH_WORD(t1,high+(k<<20)); + return t1*w; + } else return w; +diff --git a/modules/fdlibm/src/e_pow.cpp b/modules/fdlibm/src/e_pow.cpp +--- a/modules/fdlibm/src/e_pow.cpp ++++ b/modules/fdlibm/src/e_pow.cpp +@@ -52,16 +52,18 @@ + * + * Constants : + * The hexadecimal values are the intended ones for the following + * constants. The decimal values may be used, provided that the + * compiler will convert from decimal to binary accurately enough + * to produce the hexadecimal values shown. + */ + ++#include <cmath> ++ + #include <float.h> + #include "math_private.h" + + static const double + bp[] = {1.0, 1.5,}, + dp_h[] = { 0.0, 5.84962487220764160156e-01,}, /* 0x3FE2B803, 0x40000000 */ + dp_l[] = { 0.0, 1.35003920212974897128e-08,}, /* 0x3E4CFDEB, 0x43CFD006 */ + zero = 0.0, +@@ -151,17 +153,17 @@ double + return (hy<0)?-y: zero; + } + if(iy==0x3ff00000) { /* y is +-1 */ + if(hy<0) return one/x; else return x; + } + if(hy==0x40000000) return x*x; /* y is 2 */ + if(hy==0x3fe00000) { /* y is 0.5 */ + if(hx>=0) /* x >= +0 */ +- return sqrt(x); ++ return std::sqrt(x); + } + } + + ax = fabs(x); + /* special value of x */ + if(lx==0) { + if(ix==0x7ff00000||ix==0||ix==0x3ff00000){ + z = ax; /*x is +-0,+-inf,+-1*/ +diff --git a/modules/fdlibm/src/s_asinh.cpp b/modules/fdlibm/src/s_asinh.cpp +--- a/modules/fdlibm/src/s_asinh.cpp ++++ b/modules/fdlibm/src/s_asinh.cpp +@@ -19,16 +19,17 @@ + * asinh(x) = sign(x) * log [ |x| + sqrt(x*x+1) ] + * we have + * asinh(x) := x if 1+x*x=1, + * := sign(x)*(log(x)+ln2)) for large |x|, else + * := sign(x)*log(2|x|+1/(|x|+sqrt(x*x+1))) if|x|>2, else + * := sign(x)*log1p(|x| + x^2/(1 + sqrt(1+x^2))) + */ + ++#include <cmath> + #include <float.h> + + #include "math_private.h" + + static const double + one = 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */ + ln2 = 6.93147180559945286227e-01, /* 0x3FE62E42, 0xFEFA39EF */ + huge= 1.00000000000000000000e+300; +@@ -43,15 +44,15 @@ asinh(double x) + if(ix>=0x7ff00000) return x+x; /* x is inf or NaN */ + if(ix< 0x3e300000) { /* |x|<2**-28 */ + if(huge+x>one) return x; /* return x inexact except 0 */ + } + if(ix>0x41b00000) { /* |x| > 2**28 */ + w = __ieee754_log(fabs(x))+ln2; + } else if (ix>0x40000000) { /* 2**28 > |x| > 2.0 */ + t = fabs(x); +- w = __ieee754_log(2.0*t+one/(__ieee754_sqrt(x*x+one)+t)); ++ w = __ieee754_log(2.0*t+one/(std::sqrt(x*x+one)+t)); + } else { /* 2.0 > |x| > 2**-28 */ + t = x*x; +- w =log1p(fabs(x)+t/(one+__ieee754_sqrt(one+t))); ++ w =log1p(fabs(x)+t/(one+std::sqrt(one+t))); + } + if(hx>0) return w; else return -w; + } |