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std: export math_f* as math::f* submods and use tailcalls in std::math

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This commit is contained in:
Stefan Plantikow 2011-12-08 19:30:57 +01:00 • committed by Graydon Hoare
parent 6cdb69cccb
commit 6d0901cb4d
5 changed files with 45 additions and 41 deletions
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72
src/libstd/math.rs
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@ -16,13 +16,18 @@ export
ldexp, ln, ln1p, log10, log2, modf, rint, round, pow, sin, sinh, sqrt,
tan, tanh, trunc;
export f64, f32;
import f64 = math_f64;
import f32 = math_f32;
// These two must match in width according to architecture
import ctypes::m_float;
import ctypes::c_int;
import ptr;
import m_float = math_f64;
// FIXME replace with redirect to m_float::consts::FOO as soon as it works
/*
Module: consts
*/
@ -143,7 +148,7 @@ Function: acos
Returns the arccosine of an angle (measured in rad)
*/
pure fn acos(x: float) -> float
{ m_float::acos(x as m_float) as float }
{ be m_float::acos(x as m_float) as float }
/*
Function: asin
@ -151,7 +156,7 @@ Function: asin
Returns the arcsine of an angle (measured in rad)
*/
pure fn asin(x: float) -> float
{ m_float::asin(x as m_float) as float }
{ be m_float::asin(x as m_float) as float }
/*
Function: atan
@ -159,7 +164,7 @@ Function: atan
Returns the arctangents of an angle (measured in rad)
*/
pure fn atan(x: float) -> float
{ m_float::atan(x as m_float) as float }
{ be m_float::atan(x as m_float) as float }
/*
@ -168,7 +173,7 @@ Function: atan2
Returns the arctangent of an angle (measured in rad)
*/
pure fn atan2(y: float, x: float) -> float
{ m_float::atan2(y as m_float, x as m_float) as float }
{ be m_float::atan2(y as m_float, x as m_float) as float }
/*
Function: ceil
@ -176,7 +181,7 @@ Function: ceil
Returns the smallest integral value less than or equal to `n`
*/
pure fn ceil(n: float) -> float
{ m_float::ceil(n as m_float) as float }
{ be m_float::ceil(n as m_float) as float }
/*
Function: cos
@ -184,7 +189,7 @@ Function: cos
Returns the cosine of an angle `x` (measured in rad)
*/
pure fn cos(x: float) -> float
{ m_float::cos(x as m_float) as float }
{ be m_float::cos(x as m_float) as float }
/*
Function: cosh
@ -193,7 +198,7 @@ Returns the hyperbolic cosine of `x`
*/
pure fn cosh(x: float) -> float
{ m_float::cosh(x as m_float) as float }
{ be m_float::cosh(x as m_float) as float }
/*
@ -202,7 +207,7 @@ Function: exp
Returns `consts::e` to the power of `n*
*/
pure fn exp(n: float) -> float
{ m_float::exp(n as m_float) as float }
{ be m_float::exp(n as m_float) as float }
/*
Function: abs
@ -210,7 +215,7 @@ Function: abs
Returns the absolute value of `n`
*/
pure fn abs(n: float) -> float
{ m_float::abs(n as m_float) as float }
{ be m_float::abs(n as m_float) as float }
/*
Function: floor
@ -218,7 +223,7 @@ Function: floor
Returns the largest integral value less than or equal to `n`
*/
pure fn floor(n: float) -> float
{ m_float::floor(n as m_float) as float }
{ be m_float::floor(n as m_float) as float }
/*
Function: fmod
@ -226,7 +231,7 @@ Function: fmod
Returns the floating-point remainder of `x/y`
*/
pure fn fmod(x: float, y: float) -> float
{ m_float::fmod(x as m_float, y as m_float) as float }
{ be m_float::fmod(x as m_float, y as m_float) as float }
/*
Function: ln
@ -234,7 +239,7 @@ Function: ln
Returns the natural logaritm of `n`
*/
pure fn ln(n: float) -> float
{ m_float::ln(n as m_float) as float }
{ be m_float::ln(n as m_float) as float }
/*
Function: ldexp
@ -242,7 +247,7 @@ Function: ldexp
Returns `x` multiplied by 2 to the power of `n`
*/
pure fn ldexp(n: float, i: int) -> float
{ m_float::ldexp(n as m_float, i as c_int) as float }
{ be m_float::ldexp(n as m_float, i as c_int) as float }
/*
Function: ln1p
@ -251,7 +256,7 @@ Returns the natural logarithm of `1+n` accurately,
even for very small values of `n`
*/
pure fn ln1p(n: float) -> float
{ m_float::ln1p(n as m_float) as float }
{ be m_float::ln1p(n as m_float) as float }
/*
Function: log10
@ -259,7 +264,7 @@ Function: log10
Returns the logarithm to base 10 of `n`
*/
pure fn log10(n: float) -> float
{ m_float::log10(n as m_float) as float }
{ be m_float::log10(n as m_float) as float }
/*
Function: log2
@ -267,8 +272,7 @@ Function: log2
Returns the logarithm to base 2 of `n`
*/
pure fn log2(n: float) -> float
{ m_float::log2(n as m_float) as float }
{ be m_float::log2(n as m_float) as float }
/*
Function: modf
@ -282,14 +286,10 @@ Returns:
The fractional part of `n`
*/
pure fn modf(n: float, &iptr: float) -> float {
unchecked {
let f = iptr as m_float;
let r = m_float::modf(n as m_float, f) as float;
iptr = f as float;
ret r;
}
}
#[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
@ -306,13 +306,13 @@ Returns:
The fractional part of `n`
*/
pure fn frexp(n: float, &exp: c_int) -> float
{ m_float::frexp(n as m_float, exp) as float }
{ be m_float::frexp(n as m_float, exp) as float }
/*
Function: pow
*/
pure fn pow(v: float, e: float) -> float
{ m_float::pow(v as m_float, e as m_float) as float }
{ be m_float::pow(v as m_float, e as m_float) as float }
/*
@ -322,7 +322,7 @@ Returns the integral value nearest to `x` (according to the
prevailing rounding mode) in floating-point format
*/
pure fn rint(x: float) -> float
{ m_float::rint(x as m_float) as float }
{ be m_float::rint(x as m_float) as float }
/*
Function: round
@ -332,7 +332,7 @@ 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
{ m_float::round(x as m_float) as float }
{ be m_float::round(x as m_float) as float }
/*
Function: sin
@ -340,7 +340,7 @@ Function: sin
Returns the sine of an angle `x` (measured in rad)
*/
pure fn sin(x: float) -> float
{ m_float::sin(x as m_float) as float }
{ be m_float::sin(x as m_float) as float }
/*
Function: sinh
@ -348,7 +348,7 @@ Function: sinh
Returns the hyperbolic sine of an angle `x` (measured in rad)
*/
pure fn sinh(x: float) -> float
{ m_float::sinh(x as m_float) as float }
{ be m_float::sinh(x as m_float) as float }
/*
Function: sqrt
@ -356,7 +356,7 @@ Function: sqrt
Returns the square root of `x`
*/
pure fn sqrt(x: float) -> float
{ m_float::sqrt(x as m_float) as float }
{ be m_float::sqrt(x as m_float) as float }
/*
Function: tan
@ -365,7 +365,7 @@ Returns the tangent of an angle `x` (measured in rad)
*/
pure fn tan(x: float) -> float
{ m_float::tan(x as m_float) as float }
{ be m_float::tan(x as m_float) as float }
/*
Function: tanh
@ -374,7 +374,7 @@ Returns the hyperbolic tangent of an angle `x` (measured in rad)
*/
pure fn tanh(x: float) -> float
{ m_float::tanh(x as m_float) as float }
{ be m_float::tanh(x as m_float) as float }
/*
Function: trunc
@ -383,7 +383,7 @@ Returns the integral value nearest to but no larger in magnitude than `x`
*/
pure fn trunc(x: float) -> float
{ m_float::trunc(x as m_float) as float }
{ be m_float::trunc(x as m_float) as float }