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02/02/2024 06:09:55 PM
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abs.go
366 bytes
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acos_s390x.s
3.73 KB
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acosh.go
1.71 KB
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acosh_s390x.s
4.32 KB
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all_test.go
86.77 KB
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arith_s390x.go
3.73 KB
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arith_s390x_test.go
10.78 KB
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asin.go
1.09 KB
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asin_s390x.s
4.16 KB
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asinh.go
1.92 KB
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asinh_s390x.s
5.74 KB
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atan.go
3.03 KB
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atan2.go
1.52 KB
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atan2_s390x.s
6.93 KB
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atan_s390x.s
3.69 KB
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atanh.go
1.99 KB
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atanh_s390x.s
5.06 KB
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big
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bits
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bits.go
1.87 KB
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cbrt.go
2.31 KB
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cbrt_s390x.s
4.89 KB
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cmplx
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const.go
2.76 KB
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const_test.go
1.29 KB
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copysign.go
396 bytes
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cosh_s390x.s
5.59 KB
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dim.go
1.87 KB
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dim_amd64.s
1.92 KB
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dim_arm64.s
963 bytes
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dim_asm.go
344 bytes
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dim_noasm.go
410 bytes
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dim_riscv64.s
1.16 KB
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dim_s390x.s
1.97 KB
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erf.go
11.51 KB
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erf_s390x.s
8.5 KB
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erfc_s390x.s
14.4 KB
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erfinv.go
3.37 KB
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example_test.go
3.75 KB
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exp.go
5.38 KB
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exp2_asm.go
252 bytes
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exp2_noasm.go
284 bytes
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exp_amd64.go
261 bytes
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exp_amd64.s
4.24 KB
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exp_arm64.s
5.36 KB
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exp_asm.go
268 bytes
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exp_noasm.go
302 bytes
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exp_s390x.s
4.65 KB
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expm1.go
7.91 KB
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expm1_s390x.s
5.29 KB
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export_s390x_test.go
732 bytes
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export_test.go
357 bytes
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floor.go
3.29 KB
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floor_386.s
1.47 KB
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floor_amd64.s
2 KB
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floor_arm64.s
573 bytes
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floor_asm.go
431 bytes
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floor_noasm.go
531 bytes
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floor_ppc64x.s
499 bytes
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floor_s390x.s
579 bytes
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floor_wasm.s
459 bytes
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fma.go
4.61 KB
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frexp.go
929 bytes
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gamma.go
5.53 KB
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huge_test.go
2.91 KB
02/02/2024 06:09:55 PM
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hypot.go
850 bytes
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hypot_386.s
1.81 KB
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hypot_amd64.s
1.05 KB
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hypot_asm.go
264 bytes
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hypot_noasm.go
297 bytes
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j0.go
13.6 KB
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j1.go
13.3 KB
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jn.go
7.18 KB
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ldexp.go
1.05 KB
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lgamma.go
11.03 KB
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log.go
3.86 KB
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log10.go
873 bytes
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log10_s390x.s
4.73 KB
02/02/2024 06:09:55 PM
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log1p.go
6.34 KB
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log1p_s390x.s
5.15 KB
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log_amd64.s
3.66 KB
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log_asm.go
259 bytes
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log_s390x.s
4.31 KB
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log_stub.go
292 bytes
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logb.go
1021 bytes
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mod.go
903 bytes
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modf.go
913 bytes
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modf_arm64.s
447 bytes
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modf_asm.go
292 bytes
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modf_noasm.go
326 bytes
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modf_ppc64x.s
416 bytes
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nextafter.go
1.21 KB
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pow.go
3.65 KB
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pow10.go
1.24 KB
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pow_s390x.s
16.27 KB
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rand
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remainder.go
2.04 KB
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signbit.go
302 bytes
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sin.go
6.35 KB
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sin_s390x.s
8.57 KB
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sincos.go
1.76 KB
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sinh.go
1.69 KB
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sinh_s390x.s
5.98 KB
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sqrt.go
4.75 KB
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stubs.go
2.57 KB
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stubs_s390x.s
12.38 KB
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tan.go
3.68 KB
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tan_s390x.s
2.72 KB
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tanh.go
2.66 KB
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tanh_s390x.s
4.57 KB
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trig_reduce.go
3.34 KB
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unsafe.go
1.27 KB
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Editing: floor.go
Close
// Copyright 2009 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package math // Floor returns the greatest integer value less than or equal to x. // // Special cases are: // // Floor(±0) = ±0 // Floor(±Inf) = ±Inf // Floor(NaN) = NaN func Floor(x float64) float64 { if haveArchFloor { return archFloor(x) } return floor(x) } func floor(x float64) float64 { if x == 0 || IsNaN(x) || IsInf(x, 0) { return x } if x < 0 { d, fract := Modf(-x) if fract != 0.0 { d = d + 1 } return -d } d, _ := Modf(x) return d } // Ceil returns the least integer value greater than or equal to x. // // Special cases are: // // Ceil(±0) = ±0 // Ceil(±Inf) = ±Inf // Ceil(NaN) = NaN func Ceil(x float64) float64 { if haveArchCeil { return archCeil(x) } return ceil(x) } func ceil(x float64) float64 { return -Floor(-x) } // Trunc returns the integer value of x. // // Special cases are: // // Trunc(±0) = ±0 // Trunc(±Inf) = ±Inf // Trunc(NaN) = NaN func Trunc(x float64) float64 { if haveArchTrunc { return archTrunc(x) } return trunc(x) } func trunc(x float64) float64 { if x == 0 || IsNaN(x) || IsInf(x, 0) { return x } d, _ := Modf(x) return d } // Round returns the nearest integer, rounding half away from zero. // // Special cases are: // // Round(±0) = ±0 // Round(±Inf) = ±Inf // Round(NaN) = NaN func Round(x float64) float64 { // Round is a faster implementation of: // // func Round(x float64) float64 { // t := Trunc(x) // if Abs(x-t) >= 0.5 { // return t + Copysign(1, x) // } // return t // } bits := Float64bits(x) e := uint(bits>>shift) & mask if e < bias { // Round abs(x) < 1 including denormals. bits &= signMask // +-0 if e == bias-1 { bits |= uvone // +-1 } } else if e < bias+shift { // Round any abs(x) >= 1 containing a fractional component [0,1). // // Numbers with larger exponents are returned unchanged since they // must be either an integer, infinity, or NaN. const half = 1 << (shift - 1) e -= bias bits += half >> e bits &^= fracMask >> e } return Float64frombits(bits) } // RoundToEven returns the nearest integer, rounding ties to even. // // Special cases are: // // RoundToEven(±0) = ±0 // RoundToEven(±Inf) = ±Inf // RoundToEven(NaN) = NaN func RoundToEven(x float64) float64 { // RoundToEven is a faster implementation of: // // func RoundToEven(x float64) float64 { // t := math.Trunc(x) // odd := math.Remainder(t, 2) != 0 // if d := math.Abs(x - t); d > 0.5 || (d == 0.5 && odd) { // return t + math.Copysign(1, x) // } // return t // } bits := Float64bits(x) e := uint(bits>>shift) & mask if e >= bias { // Round abs(x) >= 1. // - Large numbers without fractional components, infinity, and NaN are unchanged. // - Add 0.499.. or 0.5 before truncating depending on whether the truncated // number is even or odd (respectively). const halfMinusULP = (1 << (shift - 1)) - 1 e -= bias bits += (halfMinusULP + (bits>>(shift-e))&1) >> e bits &^= fracMask >> e } else if e == bias-1 && bits&fracMask != 0 { // Round 0.5 < abs(x) < 1. bits = bits&signMask | uvone // +-1 } else { // Round abs(x) <= 0.5 including denormals. bits &= signMask // +-0 } return Float64frombits(bits) }