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| Commit | Line | Data |
|---|---|---|
| e6817382 BJ |
1 | .TH EXP 3M |
| 2 | .SH NAME | |
| 3 | exp, log, log10, pow, sqrt \- exponential, logarithm, power, square root | |
| 4 | .SH SYNOPSIS | |
| 5 | .B #include <math.h> | |
| 6 | .PP | |
| 7 | .B double exp(x) | |
| 8 | .br | |
| 9 | .B double x; | |
| 10 | .PP | |
| 11 | .B double log(x) | |
| 12 | .br | |
| 13 | .B double x; | |
| 14 | .PP | |
| 15 | .B double log10(x) | |
| 16 | .br | |
| 17 | .B double x; | |
| 18 | .PP | |
| 19 | .B double pow(x, y) | |
| 20 | .br | |
| 21 | .B double x, y; | |
| 22 | .PP | |
| 23 | .B double sqrt(x) | |
| 24 | .br | |
| 25 | .B double x; | |
| 26 | .SH DESCRIPTION | |
| 27 | .I Exp | |
| 28 | returns the exponential function of | |
| 29 | .I x. | |
| 30 | .PP | |
| 31 | .I Log | |
| 32 | returns the natural logarithm of | |
| 33 | .IR x ; | |
| 34 | .I log10 | |
| 35 | returns the base 10 logarithm. | |
| 36 | .PP | |
| 37 | .I Pow | |
| 38 | returns | |
| 39 | .I x\u\s8y\s10\d. | |
| 40 | .PP | |
| 41 | .I Sqrt | |
| 42 | returns the square root of | |
| 43 | .I x. | |
| 44 | .SH SEE ALSO | |
| 45 | hypot(3), | |
| 46 | sinh(3), | |
| 47 | intro(2) | |
| 48 | .SH DIAGNOSTICS | |
| 49 | .I Exp | |
| 50 | and | |
| 51 | .I pow | |
| 52 | return a huge value when the correct value would | |
| 53 | overflow; | |
| 54 | .I errno | |
| 55 | is set to ERANGE. | |
| 56 | .I Pow | |
| 57 | returns 0 and sets | |
| 58 | .I errno | |
| 59 | to | |
| 60 | EDOM when the second argument is negative and non-integral and | |
| 61 | when | |
| 62 | both arguments are 0. | |
| 63 | .PP | |
| 64 | .I Log | |
| 65 | returns 0 when | |
| 66 | .I x | |
| 67 | is zero or negative; | |
| 68 | .I errno | |
| 69 | is set to EDOM. | |
| 70 | .PP | |
| 71 | .I Sqrt | |
| 72 | returns 0 when | |
| 73 | .I x | |
| 74 | is negative; | |
| 75 | .I errno | |
| 76 | is set to EDOM. |