log.c File Reference

Implements the OP_LOG opcode using C99 math.h log() (natural logarithm). More...

#include <math.h>

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Functions
	if (v.type==VAL_INT||v.type==VAL_FLOAT)
	exit (1)

Variables
case	OP_LOG
	else
	break

Detailed Description

Implements the OP_LOG opcode using C99 math.h log() (natural logarithm).

Behavior:

• Pops one numeric operand (int or float).
• If x <= 0, pushes NaN to indicate domain error; otherwise pushes ln(x).
• Result type is VAL_FLOAT.

Stack effect:

• Pop: x
• Push: ln(x) | NaN

Types:

• Accepts VAL_INT and VAL_FLOAT; errors on others.

Definition in file log.c.

Function Documentation

exit()

exit

(

1

)

if()

if

(

v.

type = = VAL_INT || v.type == VAL_FLOAT

)

Definition at line 31 of file log.c.

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Variable Documentation

break

break

Definition at line 45 of file log.c.

else

else

Initial value:

{
fprintf(stderr, "Runtime type error: LOG expects number, got %s\n", value_type_name(v.type))

Definition at line 41 of file log.c.

OP_LOG

case OP_LOG

Definition at line 29 of file log.c.