Moved std::math to std::core

- merges math and float into core::float
- Splits core::ctypes into core::ctypes and core::mtypes
- cmath is not exported
- stdtest::math passes

1 files changed, 387 insertions, 0 deletions

diff --git a/src/libcore/float.rs b/src/libcore/float.rs
index 015dceb1dc1..1477fdf7d80 100644
--- a/src/libcore/float.rs
+++ b/src/libcore/float.rs
@@ -2,6 +2,36 @@
 Module: float
 */
 
+// Currently this module supports from -lm
+// C95 + log2 + log1p + trunc + round + rint
+
+export t;
+
+export consts;
+
+export
+    acos, asin, atan, atan2, ceil, cos, cosh, exp, abs, floor, fmod, frexp,
+    ldexp, ln, ln1p, log10, log2, modf, rint, round, pow, sin, sinh, sqrt,
+    tan, tanh, trunc;
+
+export to_str_common, to_str_exact, to_str, from_str;
+export lt, le, eq, ne, gt, eq;
+export NaN, isNaN, infinity, neg_infinity;
+export pow_uint_to_uint_as_float;
+export min, max;
+export add, sub, mul, div;
+export positive, negative, nonpositive, nonnegative;
+
+import mtypes::m_float;
+import ctypes::c_int;
+import ptr;
+
+// PORT This must match in width according to architecture
+import f64;
+import m_float = f64;
+
+type t = m_float;
+
 /**
  * Section: String Conversions
  */
@@ -332,6 +362,363 @@ pure fn nonnegative(x: float) -> bool {
   ret x > 0. || (1./x) == infinity;
 }
 
+/*
+Module: consts
+*/
+mod consts {
+    /*
+    Const: pi
+
+    Archimedes' constant
+    */
+    const pi: float = 3.14159265358979323846264338327950288;
+
+    /*
+    Const: frac_pi_2
+
+    pi/2.0
+    */
+    const frac_pi_2: float = 1.57079632679489661923132169163975144;
+
+    /*
+    Const: frac_pi_4
+
+    pi/4.0
+    */
+    const frac_pi_4: float = 0.785398163397448309615660845819875721;
+
+    /*
+    Const: frac_1_pi
+
+    1.0/pi
+    */
+    const frac_1_pi: float = 0.318309886183790671537767526745028724;
+
+    /*
+    Const: frac_2_pi
+
+    2.0/pi
+    */
+    const frac_2_pi: float = 0.636619772367581343075535053490057448;
+
+    /*
+    Const: frac_2_sqrtpi
+
+    2.0/sqrt(pi)
+    */
+    const frac_2_sqrtpi: float = 1.12837916709551257389615890312154517;
+
+    /*
+    Const: sqrt2
+
+    sqrt(2.0)
+    */
+    const sqrt2: float = 1.41421356237309504880168872420969808;
+
+    /*
+    Const: frac_1_sqrt2
+
+    1.0/sqrt(2.0)
+    */
+    const frac_1_sqrt2: float = 0.707106781186547524400844362104849039;
+
+    /*
+    Const: e
+
+    Euler's number
+    */
+    const e: float = 2.71828182845904523536028747135266250;
+
+    /*
+    Const: log2_e
+
+    log2(e)
+    */
+    const log2_e: float = 1.44269504088896340735992468100189214;
+
+    /*
+    Const: log10_e
+
+    log10(e)
+    */
+    const log10_e: float = 0.434294481903251827651128918916605082;
+
+    /*
+    Const: ln_2
+
+    ln(2.0)
+    */
+    const ln_2: float = 0.693147180559945309417232121458176568;
+
+    /*
+    Const: ln_10
+
+    ln(10.0)
+    */
+    const ln_10: float = 2.30258509299404568401799145468436421;
+}
+
+
+// FIXME min/max type specialize via libm when overloading works
+// (in theory fmax/fmin, fmaxf, fminf /should/ be faster)
+
+/*
+Function: min
+
+Returns the minimum of two values
+*/
+pure fn min<copy T>(x: T, y: T) -> T { x < y ? x : y }
+
+/*
+Function: max
+
+Returns the maximum of two values
+*/
+pure fn max<copy T>(x: T, y: T) -> T { x < y ? y : x }
+
+/*
+Function: acos
+
+Returns the arccosine of an angle (measured in rad)
+*/
+pure fn acos(x: float) -> float
+    { be m_float::acos(x as m_float) as float }
+
+/*
+Function: asin
+
+Returns the arcsine of an angle (measured in rad)
+*/
+pure fn asin(x: float) -> float
+    { be m_float::asin(x as m_float) as float }
+
+/*
+Function: atan
+
+Returns the arctangents of an angle (measured in rad)
+*/
+pure fn atan(x: float) -> float
+    { be m_float::atan(x as m_float) as float }
+
+
+/*
+Function: atan2
+
+Returns the arctangent of an angle (measured in rad)
+*/
+pure fn atan2(y: float, x: float) -> float
+    { be m_float::atan2(y as m_float, x as m_float) as float }
+
+/*
+Function: ceil
+
+Returns the smallest integral value less than or equal to `n`
+*/
+pure fn ceil(n: float) -> float
+    { be m_float::ceil(n as m_float) as float }
+
+/*
+Function: cos
+
+Returns the cosine of an angle `x` (measured in rad)
+*/
+pure fn cos(x: float) -> float
+    { be m_float::cos(x as m_float) as float }
+
+/*
+Function: cosh
+
+Returns the hyperbolic cosine of `x`
+
+*/
+pure fn cosh(x: float) -> float
+    { be m_float::cosh(x as m_float) as float }
+
+
+/*
+Function: exp
+
+Returns `consts::e` to the power of `n*
+*/
+pure fn exp(n: float) -> float
+    { be m_float::exp(n as m_float) as float }
+
+/*
+Function: abs
+
+Returns the absolute value of  `n`
+*/
+pure fn abs(n: float) -> float
+    { be m_float::abs(n as m_float) as float }
+
+/*
+Function: floor
+
+Returns the largest integral value less than or equal to `n`
+*/
+pure fn floor(n: float) -> float
+    { be m_float::floor(n as m_float) as float }
+
+/*
+Function: fmod
+
+Returns the floating-point remainder of `x/y`
+*/
+pure fn fmod(x: float, y: float) -> float
+    { be m_float::fmod(x as m_float, y as m_float) as float }
+
+/*
+Function: ln
+
+Returns the natural logaritm of `n`
+*/
+pure fn ln(n: float) -> float
+    { be m_float::ln(n as m_float) as float }
+
+/*
+Function: ldexp
+
+Returns `x` multiplied by 2 to the power of `n`
+*/
+pure fn ldexp(n: float, i: int) -> float
+    { be m_float::ldexp(n as m_float, i as c_int) as float }
+
+/*
+Function: ln1p
+
+Returns the natural logarithm of `1+n` accurately,
+even for very small values of `n`
+*/
+pure fn ln1p(n: float) -> float
+    { be m_float::ln1p(n as m_float) as float }
+
+/*
+Function: log10
+
+Returns the logarithm to base 10 of `n`
+*/
+pure fn log10(n: float) -> float
+    { be m_float::log10(n as m_float) as float }
+
+/*
+Function: log2
+
+Returns the logarithm to base 2 of `n`
+*/
+pure fn log2(n: float) -> float
+    { be m_float::log2(n as m_float) as float }
+
+/*
+Function: modf
+
+Breaks `n` into integral and fractional parts such that both
+have the same sign as `n`
+
+The integral part is stored in `iptr`.
+
+Returns:
+
+The fractional part of `n`
+*/
+#[no(warn_trivial_casts)] // FIXME Implement
+pure fn modf(n: float, &iptr: float) -> float { unsafe {
+    be m_float::modf(n as m_float, ptr::addr_of(iptr) as *m_float) as float
+} }
+
+/*
+Function: frexp
+
+Breaks `n` into a normalized fraction and an integral power of 2
+
+The inegral part is stored in iptr.
+
+The functions return a number x such that x has a magnitude in the interval
+[1/2, 1) or 0, and `n == x*(2 to the power of exp)`.
+
+Returns:
+
+The fractional part of `n`
+*/
+pure fn frexp(n: float, &exp: c_int) -> float
+    { be m_float::frexp(n as m_float, exp) as float }
+
+/*
+Function: pow
+*/
+pure fn pow(v: float, e: float) -> float
+    { be m_float::pow(v as m_float, e as m_float) as float }
+
+
+/*
+Function: rint
+
+Returns the integral value nearest to `x` (according to the
+prevailing rounding mode) in floating-point format
+*/
+pure fn rint(x: float) -> float
+    { be m_float::rint(x as m_float) as float }
+
+/*
+Function: round
+
+
+Return the integral value nearest to `x` rounding half-way
+cases away from zero, regardless of the current rounding direction.
+*/
+pure fn round(x: float) -> float
+    { be m_float::round(x as m_float) as float }
+
+/*
+Function: sin
+
+Returns the sine of an angle `x` (measured in rad)
+*/
+pure fn sin(x: float) -> float
+    { be m_float::sin(x as m_float) as float }
+
+/*
+Function: sinh
+
+Returns the hyperbolic sine of an angle `x` (measured in rad)
+*/
+pure fn sinh(x: float) -> float
+    { be m_float::sinh(x as m_float) as float }
+
+/*
+Function: sqrt
+
+Returns the square root of `x`
+*/
+pure fn sqrt(x: float) -> float
+    { be m_float::sqrt(x as m_float) as float }
+
+/*
+Function: tan
+
+Returns the tangent of an angle `x` (measured in rad)
+
+*/
+pure fn tan(x: float) -> float
+    { be m_float::tan(x as m_float) as float }
+
+/*
+Function: tanh
+
+Returns the hyperbolic tangent of an angle `x` (measured in rad)
+
+*/
+pure fn tanh(x: float) -> float
+    { be m_float::tanh(x as m_float) as float }
+
+/*
+Function: trunc
+
+Returns the integral value nearest to but no larger in magnitude than `x`
+
+*/
+pure fn trunc(x: float) -> float
+    { be m_float::trunc(x as m_float) as float }
+
 //
 // Local Variables:
 // mode: rust