libcore: Partially de-export char, f32, f64, and float

4 files changed, 136 insertions, 144 deletions

diff --git a/src/libcore/char.rs b/src/libcore/char.rs
index e6fab268a5b..057a2b8166b 100644
--- a/src/libcore/char.rs
+++ b/src/libcore/char.rs
@@ -47,9 +47,9 @@ export is_alphabetic,
        to_digit, cmp,
        escape_default, escape_unicode;
 
-use is_alphabetic = unicode::derived_property::Alphabetic;
-use is_XID_start = unicode::derived_property::XID_Start;
-use is_XID_continue = unicode::derived_property::XID_Continue;
+pub use is_alphabetic = unicode::derived_property::Alphabetic;
+pub use is_XID_start = unicode::derived_property::XID_Start;
+pub use is_XID_continue = unicode::derived_property::XID_Continue;
 
 
 /**
diff --git a/src/libcore/f32.rs b/src/libcore/f32.rs
index f5e4d629726..3d3f25e7bee 100644
--- a/src/libcore/f32.rs
+++ b/src/libcore/f32.rs
@@ -6,8 +6,8 @@
 
 // PORT
 
-use cmath::c_float::*;
-use cmath::c_float_targ_consts::*;
+pub use cmath::c_float::*;
+pub use cmath::c_float_targ_consts::*;
 
 export add, sub, mul, div, rem, lt, le, eq, ne, ge, gt;
 export is_positive, is_negative, is_nonpositive, is_nonnegative;
@@ -22,50 +22,48 @@ export lgamma, ln, log_radix, ln1p, log10, log2, ilog_radix;
 export modf, pow, round, sin, sinh, sqrt, tan, tanh, tgamma, trunc;
 export signbit;
 
-export num;
-
 // These are not defined inside consts:: for consistency with
 // the integer types
 
-const NaN: f32 = 0.0_f32/0.0_f32;
+pub const NaN: f32 = 0.0_f32/0.0_f32;
 
-const infinity: f32 = 1.0_f32/0.0_f32;
+pub const infinity: f32 = 1.0_f32/0.0_f32;
 
-const neg_infinity: f32 = -1.0_f32/0.0_f32;
+pub const neg_infinity: f32 = -1.0_f32/0.0_f32;
 
-pure fn is_NaN(f: f32) -> bool { f != f }
+pub pure fn is_NaN(f: f32) -> bool { f != f }
 
-pure fn add(x: f32, y: f32) -> f32 { return x + y; }
+pub pure fn add(x: f32, y: f32) -> f32 { return x + y; }
 
-pure fn sub(x: f32, y: f32) -> f32 { return x - y; }
+pub pure fn sub(x: f32, y: f32) -> f32 { return x - y; }
 
-pure fn mul(x: f32, y: f32) -> f32 { return x * y; }
+pub pure fn mul(x: f32, y: f32) -> f32 { return x * y; }
 
-pure fn div(x: f32, y: f32) -> f32 { return x / y; }
+pub pure fn div(x: f32, y: f32) -> f32 { return x / y; }
 
-pure fn rem(x: f32, y: f32) -> f32 { return x % y; }
+pub pure fn rem(x: f32, y: f32) -> f32 { return x % y; }
 
-pure fn lt(x: f32, y: f32) -> bool { return x < y; }
+pub pure fn lt(x: f32, y: f32) -> bool { return x < y; }
 
-pure fn le(x: f32, y: f32) -> bool { return x <= y; }
+pub pure fn le(x: f32, y: f32) -> bool { return x <= y; }
 
-pure fn eq(x: f32, y: f32) -> bool { return x == y; }
+pub pure fn eq(x: f32, y: f32) -> bool { return x == y; }
 
-pure fn ne(x: f32, y: f32) -> bool { return x != y; }
+pub pure fn ne(x: f32, y: f32) -> bool { return x != y; }
 
-pure fn ge(x: f32, y: f32) -> bool { return x >= y; }
+pub pure fn ge(x: f32, y: f32) -> bool { return x >= y; }
 
-pure fn gt(x: f32, y: f32) -> bool { return x > y; }
+pub pure fn gt(x: f32, y: f32) -> bool { return x > y; }
 
 // FIXME (#1999): replace the predicates below with llvm intrinsics or
 // calls to the libmath macros in the rust runtime for performance.
 
 /// Returns true if `x` is a positive number, including +0.0f320 and +Infinity
-pure fn is_positive(x: f32) -> bool
+pub pure fn is_positive(x: f32) -> bool
     { return x > 0.0f32 || (1.0f32/x) == infinity; }
 
 /// Returns true if `x` is a negative number, including -0.0f320 and -Infinity
-pure fn is_negative(x: f32) -> bool
+pub pure fn is_negative(x: f32) -> bool
     { return x < 0.0f32 || (1.0f32/x) == neg_infinity; }
 
 /**
@@ -73,7 +71,7 @@ pure fn is_negative(x: f32) -> bool
  *
  * This is the same as `f32::is_negative`.
  */
-pure fn is_nonpositive(x: f32) -> bool {
+pub pure fn is_nonpositive(x: f32) -> bool {
   return x < 0.0f32 || (1.0f32/x) == neg_infinity;
 }
 
@@ -82,78 +80,76 @@ pure fn is_nonpositive(x: f32) -> bool {
  *
  * This is the same as `f32::is_positive`.)
  */
-pure fn is_nonnegative(x: f32) -> bool {
+pub pure fn is_nonnegative(x: f32) -> bool {
   return x > 0.0f32 || (1.0f32/x) == infinity;
 }
 
 /// Returns true if `x` is a zero number (positive or negative zero)
-pure fn is_zero(x: f32) -> bool {
+pub pure fn is_zero(x: f32) -> bool {
     return x == 0.0f32 || x == -0.0f32;
 }
 
 /// Returns true if `x`is an infinite number
-pure fn is_infinite(x: f32) -> bool {
+pub pure fn is_infinite(x: f32) -> bool {
     return x == infinity || x == neg_infinity;
 }
 
 /// Returns true if `x`is a finite number
-pure fn is_finite(x: f32) -> bool {
+pub pure fn is_finite(x: f32) -> bool {
     return !(is_NaN(x) || is_infinite(x));
 }
 
 // FIXME (#1999): add is_normal, is_subnormal, and fpclassify.
 
 /* Module: consts */
-mod consts {
-    #[legacy_exports];
-
+pub mod consts {
     // FIXME (requires Issue #1433 to fix): replace with mathematical
     // constants from cmath.
     /// Archimedes' constant
-    const pi: f32 = 3.14159265358979323846264338327950288_f32;
+    pub const pi: f32 = 3.14159265358979323846264338327950288_f32;
 
     /// pi/2.0
-    const frac_pi_2: f32 = 1.57079632679489661923132169163975144_f32;
+    pub const frac_pi_2: f32 = 1.57079632679489661923132169163975144_f32;
 
     /// pi/4.0
-    const frac_pi_4: f32 = 0.785398163397448309615660845819875721_f32;
+    pub const frac_pi_4: f32 = 0.785398163397448309615660845819875721_f32;
 
     /// 1.0/pi
-    const frac_1_pi: f32 = 0.318309886183790671537767526745028724_f32;
+    pub const frac_1_pi: f32 = 0.318309886183790671537767526745028724_f32;
 
     /// 2.0/pi
-    const frac_2_pi: f32 = 0.636619772367581343075535053490057448_f32;
+    pub const frac_2_pi: f32 = 0.636619772367581343075535053490057448_f32;
 
     /// 2.0/sqrt(pi)
-    const frac_2_sqrtpi: f32 = 1.12837916709551257389615890312154517_f32;
+    pub const frac_2_sqrtpi: f32 = 1.12837916709551257389615890312154517_f32;
 
     /// sqrt(2.0)
-    const sqrt2: f32 = 1.41421356237309504880168872420969808_f32;
+    pub const sqrt2: f32 = 1.41421356237309504880168872420969808_f32;
 
     /// 1.0/sqrt(2.0)
-    const frac_1_sqrt2: f32 = 0.707106781186547524400844362104849039_f32;
+    pub const frac_1_sqrt2: f32 = 0.707106781186547524400844362104849039_f32;
 
     /// Euler's number
-    const e: f32 = 2.71828182845904523536028747135266250_f32;
+    pub const e: f32 = 2.71828182845904523536028747135266250_f32;
 
     /// log2(e)
-    const log2_e: f32 = 1.44269504088896340735992468100189214_f32;
+    pub const log2_e: f32 = 1.44269504088896340735992468100189214_f32;
 
     /// log10(e)
-    const log10_e: f32 = 0.434294481903251827651128918916605082_f32;
+    pub const log10_e: f32 = 0.434294481903251827651128918916605082_f32;
 
     /// ln(2.0)
-    const ln_2: f32 = 0.693147180559945309417232121458176568_f32;
+    pub const ln_2: f32 = 0.693147180559945309417232121458176568_f32;
 
     /// ln(10.0)
-    const ln_10: f32 = 2.30258509299404568401799145468436421_f32;
+    pub const ln_10: f32 = 2.30258509299404568401799145468436421_f32;
 }
 
-pure fn signbit(x: f32) -> int {
+pub pure fn signbit(x: f32) -> int {
     if is_negative(x) { return 1; } else { return 0; }
 }
 
-pure fn logarithm(n: f32, b: f32) -> f32 {
+pub pure fn logarithm(n: f32, b: f32) -> f32 {
     return log2(n) / log2(b);
 }
 
diff --git a/src/libcore/f64.rs b/src/libcore/f64.rs
index 56f9cd85db9..6066b6688f1 100644
--- a/src/libcore/f64.rs
+++ b/src/libcore/f64.rs
@@ -9,6 +9,9 @@
 use cmath::c_double::*;
 use cmath::c_double_targ_consts::*;
 
+// These are not defined inside consts:: for consistency with
+// the integer types
+
 // Even though this module exports everything defined in it,
 // because it contains re-exports, we also have to explicitly
 // export locally defined things. That's a bit annoying.
@@ -30,69 +33,66 @@ export j0, j1, jn, y0, y1, yn;
 
 export num;
 
-// These are not defined inside consts:: for consistency with
-// the integer types
-
 // PORT check per architecture
 
 // FIXME (#1433): obtain these in a different way
 
-const radix: uint = 2u;
+pub const radix: uint = 2u;
 
-const mantissa_digits: uint = 53u;
-const digits: uint = 15u;
+pub const mantissa_digits: uint = 53u;
+pub const digits: uint = 15u;
 
-const epsilon: f64 = 2.2204460492503131e-16_f64;
+pub const epsilon: f64 = 2.2204460492503131e-16_f64;
 
-const min_value: f64 = 2.2250738585072014e-308_f64;
-const max_value: f64 = 1.7976931348623157e+308_f64;
+pub const min_value: f64 = 2.2250738585072014e-308_f64;
+pub const max_value: f64 = 1.7976931348623157e+308_f64;
 
-const min_exp: int = -1021;
-const max_exp: int = 1024;
+pub const min_exp: int = -1021;
+pub const max_exp: int = 1024;
 
-const min_10_exp: int = -307;
-const max_10_exp: int = 308;
+pub const min_10_exp: int = -307;
+pub const max_10_exp: int = 308;
 
-const NaN: f64 = 0.0_f64/0.0_f64;
+pub const NaN: f64 = 0.0_f64/0.0_f64;
 
-const infinity: f64 = 1.0_f64/0.0_f64;
+pub const infinity: f64 = 1.0_f64/0.0_f64;
 
-const neg_infinity: f64 = -1.0_f64/0.0_f64;
+pub const neg_infinity: f64 = -1.0_f64/0.0_f64;
 
-pure fn is_NaN(f: f64) -> bool { f != f }
+pub pure fn is_NaN(f: f64) -> bool { f != f }
 
-pure fn add(x: f64, y: f64) -> f64 { return x + y; }
+pub pure fn add(x: f64, y: f64) -> f64 { return x + y; }
 
-pure fn sub(x: f64, y: f64) -> f64 { return x - y; }
+pub pure fn sub(x: f64, y: f64) -> f64 { return x - y; }
 
-pure fn mul(x: f64, y: f64) -> f64 { return x * y; }
+pub pure fn mul(x: f64, y: f64) -> f64 { return x * y; }
 
-pure fn div(x: f64, y: f64) -> f64 { return x / y; }
+pub pure fn div(x: f64, y: f64) -> f64 { return x / y; }
 
-pure fn rem(x: f64, y: f64) -> f64 { return x % y; }
+pub pure fn rem(x: f64, y: f64) -> f64 { return x % y; }
 
-pure fn lt(x: f64, y: f64) -> bool { return x < y; }
+pub pure fn lt(x: f64, y: f64) -> bool { return x < y; }
 
-pure fn le(x: f64, y: f64) -> bool { return x <= y; }
+pub pure fn le(x: f64, y: f64) -> bool { return x <= y; }
 
-pure fn eq(x: f64, y: f64) -> bool { return x == y; }
+pub pure fn eq(x: f64, y: f64) -> bool { return x == y; }
 
-pure fn ne(x: f64, y: f64) -> bool { return x != y; }
+pub pure fn ne(x: f64, y: f64) -> bool { return x != y; }
 
-pure fn ge(x: f64, y: f64) -> bool { return x >= y; }
+pub pure fn ge(x: f64, y: f64) -> bool { return x >= y; }
 
-pure fn gt(x: f64, y: f64) -> bool { return x > y; }
+pub pure fn gt(x: f64, y: f64) -> bool { return x > y; }
 
-pure fn sqrt(x: f64) -> f64 {
+pub pure fn sqrt(x: f64) -> f64 {
     cmath::c_double::sqrt(x as libc::c_double) as f64
 }
 
 /// Returns true if `x` is a positive number, including +0.0f640 and +Infinity
-pure fn is_positive(x: f64) -> bool
+pub pure fn is_positive(x: f64) -> bool
     { return x > 0.0f64 || (1.0f64/x) == infinity; }
 
 /// Returns true if `x` is a negative number, including -0.0f640 and -Infinity
-pure fn is_negative(x: f64) -> bool
+pub pure fn is_negative(x: f64) -> bool
     { return x < 0.0f64 || (1.0f64/x) == neg_infinity; }
 
 /**
@@ -100,7 +100,7 @@ pure fn is_negative(x: f64) -> bool
  *
  * This is the same as `f64::is_negative`.
  */
-pure fn is_nonpositive(x: f64) -> bool {
+pub pure fn is_nonpositive(x: f64) -> bool {
   return x < 0.0f64 || (1.0f64/x) == neg_infinity;
 }
 
@@ -109,78 +109,76 @@ pure fn is_nonpositive(x: f64) -> bool {
  *
  * This is the same as `f64::positive`.
  */
-pure fn is_nonnegative(x: f64) -> bool {
+pub pure fn is_nonnegative(x: f64) -> bool {
   return x > 0.0f64 || (1.0f64/x) == infinity;
 }
 
 /// Returns true if `x` is a zero number (positive or negative zero)
-pure fn is_zero(x: f64) -> bool {
+pub pure fn is_zero(x: f64) -> bool {
     return x == 0.0f64 || x == -0.0f64;
 }
 
 /// Returns true if `x`is an infinite number
-pure fn is_infinite(x: f64) -> bool {
+pub pure fn is_infinite(x: f64) -> bool {
     return x == infinity || x == neg_infinity;
 }
 
 /// Returns true if `x`is a finite number
-pure fn is_finite(x: f64) -> bool {
+pub pure fn is_finite(x: f64) -> bool {
     return !(is_NaN(x) || is_infinite(x));
 }
 
 // FIXME (#1999): add is_normal, is_subnormal, and fpclassify
 
 /* Module: consts */
-mod consts {
-    #[legacy_exports];
-
+pub mod consts {
     // FIXME (requires Issue #1433 to fix): replace with mathematical
     // constants from cmath.
     /// Archimedes' constant
-    const pi: f64 = 3.14159265358979323846264338327950288_f64;
+    pub const pi: f64 = 3.14159265358979323846264338327950288_f64;
 
     /// pi/2.0
-    const frac_pi_2: f64 = 1.57079632679489661923132169163975144_f64;
+    pub const frac_pi_2: f64 = 1.57079632679489661923132169163975144_f64;
 
     /// pi/4.0
-    const frac_pi_4: f64 = 0.785398163397448309615660845819875721_f64;
+    pub const frac_pi_4: f64 = 0.785398163397448309615660845819875721_f64;
 
     /// 1.0/pi
-    const frac_1_pi: f64 = 0.318309886183790671537767526745028724_f64;
+    pub const frac_1_pi: f64 = 0.318309886183790671537767526745028724_f64;
 
     /// 2.0/pi
-    const frac_2_pi: f64 = 0.636619772367581343075535053490057448_f64;
+    pub const frac_2_pi: f64 = 0.636619772367581343075535053490057448_f64;
 
     /// 2.0/sqrt(pi)
-    const frac_2_sqrtpi: f64 = 1.12837916709551257389615890312154517_f64;
+    pub const frac_2_sqrtpi: f64 = 1.12837916709551257389615890312154517_f64;
 
     /// sqrt(2.0)
-    const sqrt2: f64 = 1.41421356237309504880168872420969808_f64;
+    pub const sqrt2: f64 = 1.41421356237309504880168872420969808_f64;
 
     /// 1.0/sqrt(2.0)
-    const frac_1_sqrt2: f64 = 0.707106781186547524400844362104849039_f64;
+    pub const frac_1_sqrt2: f64 = 0.707106781186547524400844362104849039_f64;
 
     /// Euler's number
-    const e: f64 = 2.71828182845904523536028747135266250_f64;
+    pub const e: f64 = 2.71828182845904523536028747135266250_f64;
 
     /// log2(e)
-    const log2_e: f64 = 1.44269504088896340735992468100189214_f64;
+    pub const log2_e: f64 = 1.44269504088896340735992468100189214_f64;
 
     /// log10(e)
-    const log10_e: f64 = 0.434294481903251827651128918916605082_f64;
+    pub const log10_e: f64 = 0.434294481903251827651128918916605082_f64;
 
     /// ln(2.0)
-    const ln_2: f64 = 0.693147180559945309417232121458176568_f64;
+    pub const ln_2: f64 = 0.693147180559945309417232121458176568_f64;
 
     /// ln(10.0)
-    const ln_10: f64 = 2.30258509299404568401799145468436421_f64;
+    pub const ln_10: f64 = 2.30258509299404568401799145468436421_f64;
 }
 
-pure fn signbit(x: f64) -> int {
+pub pure fn signbit(x: f64) -> int {
     if is_negative(x) { return 1; } else { return 0; }
 }
 
-pure fn logarithm(n: f64, b: f64) -> f64 {
+pub pure fn logarithm(n: f64, b: f64) -> f64 {
     return log2(n) / log2(b);
 }
 
diff --git a/src/libcore/float.rs b/src/libcore/float.rs
index cf8a10b9c7b..b240fd95f19 100644
--- a/src/libcore/float.rs
+++ b/src/libcore/float.rs
@@ -51,49 +51,47 @@ const infinity: float = 1.0/0.0;
 const neg_infinity: float = -1.0/0.0;
 
 /* Module: consts */
-mod consts {
-    #[legacy_exports];
-
+pub mod consts {
     // FIXME (requires Issue #1433 to fix): replace with mathematical
     // constants from cmath.
     /// Archimedes' constant
-    const pi: float = 3.14159265358979323846264338327950288;
+    pub const pi: float = 3.14159265358979323846264338327950288;
 
     /// pi/2.0
-    const frac_pi_2: float = 1.57079632679489661923132169163975144;
+    pub const frac_pi_2: float = 1.57079632679489661923132169163975144;
 
     /// pi/4.0
-    const frac_pi_4: float = 0.785398163397448309615660845819875721;
+    pub const frac_pi_4: float = 0.785398163397448309615660845819875721;
 
     /// 1.0/pi
-    const frac_1_pi: float = 0.318309886183790671537767526745028724;
+    pub const frac_1_pi: float = 0.318309886183790671537767526745028724;
 
     /// 2.0/pi
-    const frac_2_pi: float = 0.636619772367581343075535053490057448;
+    pub const frac_2_pi: float = 0.636619772367581343075535053490057448;
 
     /// 2.0/sqrt(pi)
-    const frac_2_sqrtpi: float = 1.12837916709551257389615890312154517;
+    pub const frac_2_sqrtpi: float = 1.12837916709551257389615890312154517;
 
     /// sqrt(2.0)
-    const sqrt2: float = 1.41421356237309504880168872420969808;
+    pub const sqrt2: float = 1.41421356237309504880168872420969808;
 
     /// 1.0/sqrt(2.0)
-    const frac_1_sqrt2: float = 0.707106781186547524400844362104849039;
+    pub const frac_1_sqrt2: float = 0.707106781186547524400844362104849039;
 
     /// Euler's number
-    const e: float = 2.71828182845904523536028747135266250;
+    pub const e: float = 2.71828182845904523536028747135266250;
 
     /// log2(e)
-    const log2_e: float = 1.44269504088896340735992468100189214;
+    pub const log2_e: float = 1.44269504088896340735992468100189214;
 
     /// log10(e)
-    const log10_e: float = 0.434294481903251827651128918916605082;
+    pub const log10_e: float = 0.434294481903251827651128918916605082;
 
     /// ln(2.0)
-    const ln_2: float = 0.693147180559945309417232121458176568;
+    pub const ln_2: float = 0.693147180559945309417232121458176568;
 
     /// ln(10.0)
-    const ln_10: float = 2.30258509299404568401799145468436421;
+    pub const ln_10: float = 2.30258509299404568401799145468436421;
 }
 
 /**
@@ -194,12 +192,12 @@ fn to_str_common(num: float, digits: uint, exact: bool) -> ~str {
  * * num - The float value
  * * digits - The number of significant digits
  */
-fn to_str_exact(num: float, digits: uint) -> ~str {
+pub fn to_str_exact(num: float, digits: uint) -> ~str {
     to_str_common(num, digits, true)
 }
 
 #[test]
-fn test_to_str_exact_do_decimal() {
+pub fn test_to_str_exact_do_decimal() {
     let s = to_str_exact(5.0, 4u);
     assert s == ~"5.0000";
 }
@@ -214,7 +212,7 @@ fn test_to_str_exact_do_decimal() {
  * * num - The float value
  * * digits - The number of significant digits
  */
-fn to_str(num: float, digits: uint) -> ~str {
+pub fn to_str(num: float, digits: uint) -> ~str {
     to_str_common(num, digits, false)
 }
 
@@ -244,7 +242,7 @@ fn to_str(num: float, digits: uint) -> ~str {
  * `none` if the string did not represent a valid number.  Otherwise,
  * `Some(n)` where `n` is the floating-point number represented by `[num]`.
  */
-fn from_str(num: &str) -> Option<float> {
+pub fn from_str(num: &str) -> Option<float> {
    if num == "inf" {
        return Some(infinity as float);
    } else if num == "-inf" {
@@ -379,7 +377,7 @@ fn from_str(num: &str) -> Option<float> {
  *
  * `NaN` if both `x` and `pow` are `0u`, otherwise `x^pow`
  */
-fn pow_with_uint(base: uint, pow: uint) -> float {
+pub fn pow_with_uint(base: uint, pow: uint) -> float {
     if base == 0u {
         if pow == 0u {
             return NaN as float;
@@ -399,21 +397,21 @@ fn pow_with_uint(base: uint, pow: uint) -> float {
     return total;
 }
 
-pure fn is_positive(x: float) -> bool { f64::is_positive(x as f64) }
-pure fn is_negative(x: float) -> bool { f64::is_negative(x as f64) }
-pure fn is_nonpositive(x: float) -> bool { f64::is_nonpositive(x as f64) }
-pure fn is_nonnegative(x: float) -> bool { f64::is_nonnegative(x as f64) }
-pure fn is_zero(x: float) -> bool { f64::is_zero(x as f64) }
-pure fn is_infinite(x: float) -> bool { f64::is_infinite(x as f64) }
-pure fn is_finite(x: float) -> bool { f64::is_finite(x as f64) }
-pure fn is_NaN(x: float) -> bool { f64::is_NaN(x as f64) }
-
-pure fn abs(x: float) -> float { f64::abs(x as f64) as float }
-pure fn sqrt(x: float) -> float { f64::sqrt(x as f64) as float }
-pure fn atan(x: float) -> float { f64::atan(x as f64) as float }
-pure fn sin(x: float) -> float { f64::sin(x as f64) as float }
-pure fn cos(x: float) -> float { f64::cos(x as f64) as float }
-pure fn tan(x: float) -> float { f64::tan(x as f64) as float }
+pub pure fn is_positive(x: float) -> bool { f64::is_positive(x as f64) }
+pub pure fn is_negative(x: float) -> bool { f64::is_negative(x as f64) }
+pub pure fn is_nonpositive(x: float) -> bool { f64::is_nonpositive(x as f64) }
+pub pure fn is_nonnegative(x: float) -> bool { f64::is_nonnegative(x as f64) }
+pub pure fn is_zero(x: float) -> bool { f64::is_zero(x as f64) }
+pub pure fn is_infinite(x: float) -> bool { f64::is_infinite(x as f64) }
+pub pure fn is_finite(x: float) -> bool { f64::is_finite(x as f64) }
+pub pure fn is_NaN(x: float) -> bool { f64::is_NaN(x as f64) }
+
+pub pure fn abs(x: float) -> float { f64::abs(x as f64) as float }
+pub pure fn sqrt(x: float) -> float { f64::sqrt(x as f64) as float }
+pub pure fn atan(x: float) -> float { f64::atan(x as f64) as float }
+pub pure fn sin(x: float) -> float { f64::sin(x as f64) as float }
+pub pure fn cos(x: float) -> float { f64::cos(x as f64) as float }
+pub pure fn tan(x: float) -> float { f64::tan(x as f64) as float }
 
 impl float : Eq {
     pure fn eq(other: &float) -> bool { self == (*other) }
@@ -440,7 +438,7 @@ impl float: num::Num {
 }
 
 #[test]
-fn test_from_str() {
+pub fn test_from_str() {
    assert from_str(~"3") == Some(3.);
    assert from_str(~"3") == Some(3.);
    assert from_str(~"3.14") == Some(3.14);
@@ -483,7 +481,7 @@ fn test_from_str() {
 }
 
 #[test]
-fn test_positive() {
+pub fn test_positive() {
   assert(is_positive(infinity));
   assert(is_positive(1.));
   assert(is_positive(0.));
@@ -494,7 +492,7 @@ fn test_positive() {
 }
 
 #[test]
-fn test_negative() {
+pub fn test_negative() {
   assert(!is_negative(infinity));
   assert(!is_negative(1.));
   assert(!is_negative(0.));
@@ -505,7 +503,7 @@ fn test_negative() {
 }
 
 #[test]
-fn test_nonpositive() {
+pub fn test_nonpositive() {
   assert(!is_nonpositive(infinity));
   assert(!is_nonpositive(1.));
   assert(!is_nonpositive(0.));
@@ -516,7 +514,7 @@ fn test_nonpositive() {
 }
 
 #[test]
-fn test_nonnegative() {
+pub fn test_nonnegative() {
   assert(is_nonnegative(infinity));
   assert(is_nonnegative(1.));
   assert(is_nonnegative(0.));
@@ -527,13 +525,13 @@ fn test_nonnegative() {
 }
 
 #[test]
-fn test_to_str_inf() {
+pub fn test_to_str_inf() {
     assert to_str(infinity, 10u) == ~"inf";
     assert to_str(-infinity, 10u) == ~"-inf";
 }
 
 #[test]
-fn test_traits() {
+pub fn test_traits() {
     fn test<U:num::Num cmp::Eq>(ten: &U) {
         assert (ten.to_int() == 10);