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Diffstat (limited to 'v_windows/v/old/vlib/math/const.v')
| -rw-r--r-- | v_windows/v/old/vlib/math/const.v | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/v_windows/v/old/vlib/math/const.v b/v_windows/v/old/vlib/math/const.v new file mode 100644 index 0000000..5a831a9 --- /dev/null +++ b/v_windows/v/old/vlib/math/const.v @@ -0,0 +1,49 @@ +// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved. +// Use of this source code is governed by an MIT license +// that can be found in the LICENSE file. +module math + +pub 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 +) + +// Floating-point limit values +// max is the largest finite value representable by the type. +// smallest_non_zero is the smallest positive, non-zero value representable by the type. +pub const ( + max_f32 = 3.40282346638528859811704183484516925440e+38 // 2**127 * (2**24 - 1) / 2**23 + smallest_non_zero_f32 = 1.401298464324817070923729583289916131280e-45 // 1 / 2**(127 - 1 + 23) + max_f64 = 1.797693134862315708145274237317043567981e+308 // 2**1023 * (2**53 - 1) / 2**52 + smallest_non_zero_f64 = 4.940656458412465441765687928682213723651e-324 // 1 / 2**(1023 - 1 + 52) +) + +// Integer limit values +pub const ( + max_i8 = 127 + min_i8 = -128 + max_i16 = 32767 + min_i16 = -32768 + max_i32 = 2147483647 + min_i32 = -2147483648 + // -9223372036854775808 is wrong because C compilers parse literal values + // without sign first, and 9223372036854775808 overflows i64, hence the + // consecutive subtraction by 1 + min_i64 = i64(-9223372036854775807 - 1) + max_i64 = i64(9223372036854775807) + max_u8 = 255 + max_u16 = 65535 + max_u32 = u32(4294967295) + max_u64 = u64(18446744073709551615) +) |