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Text File | 1997-08-18 | 2.2 KB | 75 lines | [TEXT/Moml] |
- (* Math -- SML Basis Library *)
-
- type real = real
-
- val pi : real
- val e : real
-
- val sqrt : real -> real
- val sin : real -> real
- val cos : real -> real
- val tan : real -> real
- val atan : real -> real
- val asin : real -> real
- val acos : real -> real
- val atan2 : real * real -> real
- val exp : real -> real
- val pow : real * real -> real
- val ln : real -> real
- val log10 : real -> real
- val sinh : real -> real
- val cosh : real -> real
- val tanh : real -> real
-
- (*
- [pi] is the circumference of the circle with diameter 1:
- 3.14159265358979323846.
-
- [e] is the base of the natural logarithm: 2.7182818284590452354.
-
- [sqrt x] is the square root of x. Raises Domain is x < 0.0.
-
- [sin r] is the sine of r, where r is in radians.
-
- [cos r] is the cosine of r, where r is in radians.
-
- [tan r] is the tangent of r, where r is in radians. Raises Domain if
- r is a multiple of pi/2.
-
- [atan t] is the arc tangent of t, in the open interval ] ~pi/2, pi/2 [.
-
- [asin t] is the arc sine of t, in the closed interval [ ~pi/2, pi/2 ].
- Raises Domain if abs x > 1.
-
- [acos t] is the arc cosine of t, in the closed interval [ 0, pi ].
- Raises Domain if abs x > 1.
-
- [atan2(y, x)] is the arc tangent of y/x, in the interval ] ~pi, pi ],
- except that atan2(y, 0) = sign y * pi/2. The quadrant of the result
- is the same as the quadrant of the point (x, y).
- Hence sign(cos(atan2(y, x))) = sign x
- and sign(sin(atan2(y, x))) = sign y.
-
- [exp x] is e to the x'th power.
-
- [pow (x, y)] is x it the y'th power, defined when
- y >= 0 and (y integral or x >= 0)
- or y < 0 and ((y integral and x <> 0.0) or x > 0).
-
- We define pow(0, 0) = 1.
-
- [ln x] is the natural logarithm of x (that is, with base e).
- Raises Domain if x <= 0.0.
-
- [log10 x] is the base-10 logarithm of x. Raises Domain if x <= 0.0.
-
- [sinh x] returns the hyperbolic sine of x, mathematically defined as
- (exp x - exp (~x)) / 2. Raises Overflow if x is too large.
-
- [cosh x] returns the hyperbolic cosine of x, mathematically defined as
- (exp x + exp (~x)) / 2. Raises Overflow if x is too large.
-
- [tanh x] returns the hyperbolic tangent of x, mathematically defined
- as (sinh x) / (cosh x). Raises Domain if x is too large.
- *)
-