1208 		struct functions  struct
1214 			static expr plus(float x, float y) { return expr(x+y); }  in plus()
1220 			static expr minus(float x, float y) { return expr(x-y); }  in minus()
1226 			static expr multiplies(float x, float y) { return expr(x*y); }  in multiplies()
1232 			static expr divides(float x, float y) { return expr(x/y); }  in divides()
1238 …tream<charT,traits>& write(std::basic_ostream<charT,traits> &out, float arg) { return out << arg; }  in write()
1244 …its> static std::basic_istream<charT,traits>& read(std::basic_istream<charT,traits> &in, half &arg)  in read()
1256 			static expr fmod(float x, float y) { return expr(std::fmod(x, y)); }  in fmod()
1262 			static expr remainder(float x, float y)  in remainder()
1293 			static expr remquo(float x, float y, int *quo)  in remquo()
1339 			static expr fdim(float x, float y)  in fdim()
1353 			static expr fma(float x, float y, float z)  in fma()
1364 			static half nanh() { return half(binary, 0x7FFF); }  in nanh()
1369 			static expr exp(float arg) { return expr(std::exp(arg)); }  in exp()
1374 			static expr expm1(float arg)  in expm1()
1386 			static expr exp2(float arg)  in exp2()
1398 			static expr log(float arg) { return expr(std::log(arg)); }  in log()
1403 			static expr log10(float arg) { return expr(std::log10(arg)); }  in log10()
1408 			static expr log1p(float arg)  in log1p()
1420 			static expr log2(float arg)  in log2()
1432 			static expr sqrt(float arg) { return expr(std::sqrt(arg)); }  in sqrt()
1437 			static expr cbrt(float arg)  in cbrt()
1453 			static expr hypot(float x, float y)  in hypot()
1467 			static expr pow(float base, float exp) { return expr(std::pow(base, exp)); }  in pow()
1472 			static expr sin(float arg) { return expr(std::sin(arg)); }  in sin()
1477 			static expr cos(float arg) { return expr(std::cos(arg)); }  in cos()
1482 			static expr tan(float arg) { return expr(std::tan(arg)); }  in tan()
1487 			static expr asin(float arg) { return expr(std::asin(arg)); }  in asin()
1492 			static expr acos(float arg) { return expr(std::acos(arg)); }  in acos()
1497 			static expr atan(float arg) { return expr(std::atan(arg)); }  in atan()
1503 			static expr atan2(float x, float y) { return expr(std::atan2(x, y)); }  in atan2()
1508 			static expr sinh(float arg) { return expr(std::sinh(arg)); }  in sinh()
1513 			static expr cosh(float arg) { return expr(std::cosh(arg)); }  in cosh()
1518 			static expr tanh(float arg) { return expr(std::tanh(arg)); }  in tanh()
1523 			static expr asinh(float arg)  in asinh()
1535 			static expr acosh(float arg)  in acosh()
1547 			static expr atanh(float arg)  in atanh()
1559 			static expr erf(float arg)  in erf()
1571 			static expr erfc(float arg)  in erfc()
1583 			static expr lgamma(float arg)  in lgamma()
1605 			static expr tgamma(float arg)  in tgamma()
1629 …alf floor(half arg) { return half(binary, round_half<std::round_toward_neg_infinity>(arg.data_)); }  in floor()
1634 …tic half ceil(half arg) { return half(binary, round_half<std::round_toward_infinity>(arg.data_)); }  in ceil()
1639 …static half trunc(half arg) { return half(binary, round_half<std::round_toward_zero>(arg.data_)); }  in trunc()
1644 			static half round(half arg) { return half(binary, round_half_up(arg.data_)); }  in round()
1649 			static long lround(half arg) { return detail::half2int_up<long>(arg.data_); }  in lround()
1654 			static half rint(half arg) { return half(binary, round_half<half::round_style>(arg.data_)); }  in rint()
1659 			static long lrint(half arg) { return detail::half2int<half::round_style,long>(arg.data_); }  in lrint()
1665 			static long long llround(half arg) { return detail::half2int_up<long long>(arg.data_); }  in llround()
1670 …tic long long llrint(half arg) { return detail::half2int<half::round_style,long long>(arg.data_); }  in llrint()
1677 			static half frexp(half arg, int *exp)  in frexp()
1690 			static half modf(half arg, half *iptr)  in modf()
1710 			static half scalbln(half arg, long exp)  in scalbln()
1757 			static int ilogb(half arg)  in ilogb()
1777 			static half logb(half arg)  in logb()
1805 			static half nextafter(half from, half to)  in nextafter()
1823 			static half nexttoward(half from, long double to)  in nexttoward()
1839 			static half copysign(half x, half y) { return half(binary, x.data_^((x.data_^y.data_)&0x8000)); }  in copysign()
1845 			static int fpclassify(half arg)  in fpclassify()
1855 			static bool isfinite(half arg) { return (arg.data_&0x7C00) != 0x7C00; }  in isfinite()
1861 			static bool isinf(half arg) { return (arg.data_&0x7FFF) == 0x7C00; }  in isinf()
1867 			static bool isnan(half arg) { return (arg.data_&0x7FFF) > 0x7C00; }  in isnan()
1873 			static bool isnormal(half arg) { return ((arg.data_&0x7C00)!=0) & ((arg.data_&0x7C00)!=0x7C00); }  in isnormal()
1879 			static bool signbit(half arg) { return (arg.data_&0x8000) != 0; }  in signbit()
1886 … isequal(half x, half y) { return (x.data_==y.data_ || !((x.data_|y.data_)&0x7FFF)) && !isnan(x); }  in isequal()
1893 …isnotequal(half x, half y) { return (x.data_!=y.data_ && ((x.data_|y.data_)&0x7FFF)) || isnan(x); }  in isnotequal()
1900 			static bool isgreater(half x, half y)  in isgreater()
1911 			static bool isgreaterequal(half x, half y)  in isgreaterequal()
1922 			static bool isless(half x, half y)  in isless()
1933 			static bool islessequal(half x, half y)  in islessequal()
1944 			static bool islessgreater(half x, half y)  in islessgreater()
1958 			static bool isunordered(half x, half y) { return isnan(x) || isnan(y); }  in isunordered()
1961 			static double erf(double arg)  in erf()
1969 			static double lgamma(double arg)  in lgamma()