diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/posix/posix_other.nim | 2 | ||||
| -rw-r--r-- | lib/pure/rationals.nim | 11 | ||||
| -rw-r--r-- | lib/system.nim | 12 |
3 files changed, 21 insertions, 4 deletions
diff --git a/lib/posix/posix_other.nim b/lib/posix/posix_other.nim index e552bf807..01bc1c1e5 100644 --- a/lib/posix/posix_other.nim +++ b/lib/posix/posix_other.nim @@ -34,7 +34,7 @@ type {.deprecated: [TSocketHandle: SocketHandle].} type - Time* {.importc: "time_t", header: "<time.h>".} = distinct int + Time* {.importc: "time_t", header: "<time.h>".} = distinct clong Timespec* {.importc: "struct timespec", header: "<time.h>", final, pure.} = object ## struct timespec diff --git a/lib/pure/rationals.nim b/lib/pure/rationals.nim index 7fb24c26f..7907b4e6c 100644 --- a/lib/pure/rationals.nim +++ b/lib/pure/rationals.nim @@ -39,7 +39,7 @@ proc toRational*[T:SomeInteger](x: T): Rational[T] = result.num = x result.den = 1 -proc toRational*(x: float, n: int = high(int32)): Rational[int] = +proc toRational*(x: float, n: int = high(int) shr (sizeof(int) div 2 * 8)): Rational[int] = ## Calculates the best rational numerator and denominator ## that approximates to `x`, where the denominator is ## smaller than `n` (default is the largest possible @@ -323,8 +323,13 @@ when isMainModule: assert abs(toFloat(y) - 0.4814814814814815) < 1.0e-7 assert toInt(z) == 0 - assert toRational(0.98765432) == 2111111029 // 2137499919 - assert toRational(PI) == 817696623 // 260280919 + when sizeof(int) == 8: + assert toRational(0.98765432) == 2111111029 // 2137499919 + assert toRational(PI) == 817696623 // 260280919 + when sizeof(int) == 4: + assert toRational(0.98765432) == 80 // 81 + assert toRational(PI) == 355 // 113 + assert toRational(0.1) == 1 // 10 assert toRational(0.9) == 9 // 10 diff --git a/lib/system.nim b/lib/system.nim index 85643891b..4d8610737 100644 --- a/lib/system.nim +++ b/lib/system.nim @@ -743,6 +743,18 @@ proc newSeqOfCap*[T](cap: Natural): seq[T] {. ## ``cap``. discard +when not defined(JS): + proc newSeqUninitialized*[T: SomeNumber](len: Natural): seq[T] = + ## creates a new sequence of type ``seq[T]`` with length ``len``. + ## + ## Only available for numbers types. Note that the sequence will be + ## uninitialized. After the creation of the sequence you should assign + ## entries to the sequence instead of adding them. + + result = newSeqOfCap[T](len) + var s = cast[PGenericSeq](result) + s.len = len + proc len*[TOpenArray: openArray|varargs](x: TOpenArray): int {. magic: "LengthOpenArray", noSideEffect.} proc len*(x: string): int {.magic: "LengthStr", noSideEffect.} |