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Issue 16984 - Make std.math runnable

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This commit is contained in:
Sebastian Wilzbach 2017-07-12 19:21:26 +02:00
parent 38b86e66a9
commit 2e96d0654b
1 changed files with 15 additions and 2 deletions
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17
std/math.d
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@ -2771,8 +2771,7 @@ if (isFloatingPoint!T)
int exp;
real mantissa = frexp(123.456L, exp);
// check if values are equal to 19 decimal digits of precision
assert(equalsDigit(mantissa * pow(2.0L, cast(real) exp), 123.456L, 19));
assert(approxEqual(mantissa * pow(2.0L, cast(real) exp), 123.456L));
assert(frexp(-real.nan, exp) && exp == int.min);
assert(frexp(real.nan, exp) && exp == int.min);
@ -2782,6 +2781,15 @@ if (isFloatingPoint!T)
assert(frexp(0.0, exp) == 0.0 && exp == 0);
}
@system unittest
{
int exp;
real mantissa = frexp(123.456L, exp);
// check if values are equal to 19 decimal digits of precision
assert(equalsDigit(mantissa * pow(2.0L, cast(real) exp), 123.456L, 19));
}
@safe unittest
{
import std.meta : AliasSeq;
@ -3619,6 +3627,11 @@ real log2(real x) @safe pure nothrow @nogc
}
///
@system unittest
{
assert(approxEqual(log2(1024.0L), 10));
}
@system unittest
{
// check if values are equal to 19 decimal digits of precision