Constants
The following constants are pre-defined by the compiler:
- TRUE and FALSE — Logical true and false.
- POSX and NEGX — The maximum possible positive and negative integers.
- PI — Approximation of the mathematical constant π.
- RCFAST through PLL16X — CLKMODE configuration settings.
Constant Table
| TRUE | Logical true: | -1 | ($FFFFFFFF) |
| FALSE | Logical false: | 0 | ($00000000) |
| POSX | Maximum positive integer: | 2147483647 | ($7FFFFFFF) |
| NEGX | Maximum negative integer: | -2147483648 | ($80000000) |
| PI | Floating-point value for PI: | ≈ 3.141593 | ($40490FDB) |
| RCFAST | Internal fast oscillator: | $00000001 | (%00000000001) |
| RCSLOW | Internal slow oscillator: | $00000002 | (%00000000010) |
| XINPUT | External clock/oscillator: | $00000004 | (%00000000100) |
| XTAL1 | External low-speed crystal: | $00000008 | (%00000001000) |
| XTAL2 | External medium-speed crystal: | $00000010 | (%00000010000) |
| XTAL3 | External high-speed crystal: | $00000020 | (%00000100000) |
| PLL1X | External frequency times 1: | $00000040 | (%00001000000) |
| PLL2X | External frequency times 2: | $00000080 | (%00010000000) |
| PLL4X | External frequency times 4: | $00000100 | (%00100000000) |
| PLL8X | External frequency times 8: | $00000200 | (%01000000000) |
| PLL16X | External frequency times 16: | $00000400 | (%10000000000) |
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