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Fix math/gamma and add math/log-gamma

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This commit is contained in:
Josef Pospíšil 2021-11-24 10:55:32 +01:00
parent 868ec1a7e3
commit e6babd84f7
2 changed files with 34 additions and 1 deletions
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4
src/core/math.c
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@ -286,7 +286,8 @@ JANET_DEFINE_MATHOP(fabs, fabs, "Return the absolute value of x.")
JANET_DEFINE_MATHOP(floor, floor, "Returns the largest integer value number that is not greater than x.")
JANET_DEFINE_MATHOP(trunc, trunc, "Returns the integer between x and 0 nearest to x.")
JANET_DEFINE_MATHOP(round, round, "Returns the integer nearest to x.")
JANET_DEFINE_MATHOP(gamma, lgamma, "Returns gamma(x).")
JANET_DEFINE_MATHOP(gamma, tgamma, "Returns gamma(x).")
JANET_DEFINE_MATHOP(lgamma, lgamma, "Returns log-gamma(x).")
JANET_DEFINE_MATHOP(log1p, log1p, "Returns (log base e of x) + 1 more accurately than (+ (math/log x) 1)")
JANET_DEFINE_MATHOP(erf, erf, "Returns the error function of x.")
JANET_DEFINE_MATHOP(erfc, erfc, "Returns the complementary error function of x.")
@ -383,6 +384,7 @@ void janet_lib_math(JanetTable *env) {
JANET_CORE_REG("math/exp2", janet_exp2),
JANET_CORE_REG("math/log1p", janet_log1p),
JANET_CORE_REG("math/gamma", janet_gamma),
JANET_CORE_REG("math/log-gamma", janet_lgamma),
JANET_CORE_REG("math/erfc", janet_erfc),
JANET_CORE_REG("math/erf", janet_erf),
JANET_CORE_REG("math/expm1", janet_expm1),

31
test/suite0011.janet Normal file
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@ -0,0 +1,31 @@
# Copyright (c) 2021 Calvin Rose & contributors
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
(import ./helper :prefix "" :exit true)
(start-suite 11)
(assert (< 11899423.08 (math/gamma 11.5) 11899423.085)
"math/gamma")
(assert (< 2605.1158 (math/log-gamma 500) 2605.1159)
"math/log-gamma")
(end-suite)