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Added TE_NAT_LOG option.

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Lewis Van Winkle
2016-08-22 21:23:16 -05:00
parent af6c47ef28
commit f70b786ec2
1 changed files with 9 additions and 0 deletions
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9
tinyexpr.c
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@@ -29,6 +29,10 @@ For a^b^c = (a^b)^c and -a^b = (-a)^b do nothing.
For a^b^c = a^(b^c) and -a^b = -(a^b) uncomment the next line.*/ For a^b^c = a^(b^c) and -a^b = -(a^b) uncomment the next line.*/
/* #define TE_POW_FROM_RIGHT */ /* #define TE_POW_FROM_RIGHT */
/* Logarithms
For log = base 10 log do nothing
For log = natural log uncomment the next line. */
/* #define TE_NAT_LOG */
#include "tinyexpr.h" #include "tinyexpr.h"
#include <stdlib.h> #include <stdlib.h>
@@ -124,7 +128,12 @@ static const te_variable functions[] = {
{"exp", exp, TE_FUNCTION1 | TE_FLAG_PURE}, {"exp", exp, TE_FUNCTION1 | TE_FLAG_PURE},
{"floor", floor, TE_FUNCTION1 | TE_FLAG_PURE}, {"floor", floor, TE_FUNCTION1 | TE_FLAG_PURE},
{"ln", log, TE_FUNCTION1 | TE_FLAG_PURE}, {"ln", log, TE_FUNCTION1 | TE_FLAG_PURE},
#ifdef TE_NAT_LOG
{"log", log, TE_FUNCTION1 | TE_FLAG_PURE},
#else
{"log", log10, TE_FUNCTION1 | TE_FLAG_PURE}, {"log", log10, TE_FUNCTION1 | TE_FLAG_PURE},
#endif
{"log10", log10, TE_FUNCTION1 | TE_FLAG_PURE},
{"pi", pi, TE_FUNCTION0 | TE_FLAG_PURE}, {"pi", pi, TE_FUNCTION0 | TE_FLAG_PURE},
{"pow", pow, TE_FUNCTION2 | TE_FLAG_PURE}, {"pow", pow, TE_FUNCTION2 | TE_FLAG_PURE},
{"sin", sin, TE_FUNCTION1 | TE_FLAG_PURE}, {"sin", sin, TE_FUNCTION1 | TE_FLAG_PURE},