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Diffstat (limited to 'docs/library/math.rst')
| -rw-r--r-- | docs/library/math.rst | 42 |
1 files changed, 37 insertions, 5 deletions
diff --git a/docs/library/math.rst b/docs/library/math.rst index 53427ea557..988a8c2843 100644 --- a/docs/library/math.rst +++ b/docs/library/math.rst @@ -1,5 +1,5 @@ -:mod:`math` --- mathematical functions -====================================== +:mod:`math` -- mathematical functions +===================================== .. module:: math :synopsis: mathematical functions @@ -7,45 +7,58 @@ The ``math`` module provides some basic mathematical funtions for working with floating-point numbers. +*Note:* On the pyboard, floating-point numbers have 32-bit precision. Functions --------- .. function:: acos(x) + Return the inverse cosine of ``x``. .. function:: acosh(x) + Return the inverse hyperbolic cosine of ``x``. .. function:: asin(x) + Return the inverse sine of ``x``. .. function:: asinh(x) + Return the inverse hyperbolic sine of ``x``. .. function:: atan(x) + Return the inverse tangent of ``x``. .. function:: atan2(y, x) + Return the principal value of the inverse tangent of ``y/x``. .. function:: atanh(x) + Return the inverse hyperbolic tangent of ``x``. .. function:: ceil(x) + Return an integer, being ``x`` rounded towards positive infinity. .. function:: copysign(x, y) + Return ``x`` with the sign of ``y``. .. function:: cos(x) + Return the cosine of ``x``. .. function:: cosh(x) + Return the hyperbolic cosine of ``x``. .. function:: degrees(x) + Return radians ``x`` converted to degrees. .. function:: erf(x) @@ -57,18 +70,23 @@ Functions .. function:: exp(x) + Return the exponential of ``x``. .. function:: expm1(x) + Return ``exp(x) - 1``. .. function:: fabs(x) + Return the absolute value of ``x``. .. function:: floor(x) + Return an integer, being ``x`` rounded towards negative infinity. .. function:: fmod(x, y) + Return the remainder of ``x/y``. .. function:: frexp(x) @@ -80,31 +98,40 @@ Functions .. function:: isfinite(x) + Return ``True`` if ``x`` is finite. .. function:: isinf(x) + Return ``True`` if ``x`` is infinite. .. function:: isnan(x) + Return ``True`` if ``x`` is not-a-number .. function:: ldexp(x, exp) + Return ``x * (2**exp)``. .. function:: lgamma(x) - return the natural logarithm of the gamma function of ``x``. + Return the natural logarithm of the gamma function of ``x``. .. function:: log(x) + Return the natural logarithm of ``x``. .. function:: log10(x) + Return the base-10 logarithm of ``x``. .. function:: log2(x) + Return the base-2 logarithm of ``x``. .. function:: modf(x) + Return a tuple of two floats, being the fractional and integral parts of + ``x``. Both return values have the same sign as ``x``. .. function:: pow(x, y) @@ -112,26 +139,31 @@ Functions .. function:: radians(x) + Return degrees ``x`` converted to radians. .. function:: sin(x) + Return the sine of ``x``. .. function:: sinh(x) + Return the hyperbolic sine of ``x``. .. function:: sqrt(x) - Returns the square root of ``x``. + Return the square root of ``x``. .. function:: tan(x) + Return the tangent of ``x``. .. function:: tanh(x) + Return the hyperbolic tangent of ``x``. .. function:: trunc(x) - + Return an integer, being ``x`` rounded towards 0. Constants --------- |