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math: new consts + helpers funcs for string to int / float

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joe-conigliaro
2019-10-17 17:04:57 +11:00
committed by Alexander Medvednikov
parent 5cd38ec91b
commit b32a462b2e
3 changed files with 108 additions and 33 deletions
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33
vlib/math/math.v
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@ -10,39 +10,6 @@ module math
// When adding a new function, please make sure it's in the right place.
// All functions are sorted alphabetically.
const (
e = 2.71828182845904523536028747135266249775724709369995957496696763
pi = 3.14159265358979323846264338327950288419716939937510582097494459
phi = 1.61803398874989484820458683436563811772030917980576286213544862
tau = 6.28318530717958647692528676655900576839433879875021164194988918
sqrt2 = 1.41421356237309504880168872420969807856967187537694807317667974
sqrt_e = 1.64872127070012814684865078781416357165377610071014801157507931
sqrt_pi = 1.77245385090551602729816748334114518279754945612238712821380779
sqrt_tau = 2.50662827463100050241576528481104525300698674060993831662992357
sqrt_phi = 1.27201964951406896425242246173749149171560804184009624861664038
ln2 = 0.693147180559945309417232121458176568075500134360255254120680009
log2_e = 1.0 / ln2
ln10 = 2.30258509299404568401799145468436420760110148862877297603332790
log10_e = 1.0 / ln10
)
const (
max_i8 = 127
min_i8 = -128
max_i16 = 32767
min_i16 = -32768
max_i32 = 2147483647
min_i32 = -2147483648
// MaxI64 = ((1<<63) - 1)
// MinI64 = (-(1 << 63) )
max_u8 = 255
max_u16 = 65535
max_u32 = 4294967295
max_u64 = 18446744073709551615
)
// Returns the absolute value.
pub fn abs(a f64) f64 {
if a < 0 {